Vaadin 14 package-for-production execution fails

When trying to build my Spring-Boot Vaadin application for production it always fails with following error:

`Failed to execute goal com.vaadin:vaadin-maven-plugin:14.0.4:package-for-production (default-cli) on project vaadin-demo-bakery-app: Execution default-cli of goal com.vaadin:vaadin-maven-plugin:14.0.4:package-for-production failed: An import that ends with ‘bower_components/vaadin-cookie-consent/src/vaadin-cookie-consent.html’ cannot be resolved: the corresponding file ‘D:\Git\vaadin-demo-bakery-app\target\frontend\bower_components\vaadin-cookie-consent\src\vaadin-cookie-consent.html’ was not found. Double check the corresponding import and verify the following:

• the import string is correct
• the file imported is either present in ‘frontend://’ directory of the project or in one of the project WebJar dependencies or in one of the regular jar dependencies
• if the file is present in one of the regular jar dependencies, it should be located in META-INF/resources/frontend directory in the jar`

Vaadin Version 14.0.5, Java 8, Spring Boot 2.1.3.RELEASE

Also tried to build the current vaadin bakery app (https://github.com/igor-baiborodine/vaadin-demo-bakery-app) which also fails with the same error.

Vaadin Version 14.0.4 , Java 8, Spring Boot 2.1.7.RELEASE

[christian-ehmke]

Since Vaadin 14.0.9 and 14.0.10 the problem occurs again, please reopen the issue. I am using Spring Boot: 2.2.0, Java JDK 13.0.1 and NPM 12.X.

You can reproduce the problem by using my artefact. The source code and build is documented on GitHub. Please see my links:

• Sourcecode on GitHub
• Build on GitHub
• Download JAR from GitHub

The problem occurs on my local Windows machine, Google Cloud Compute Engine (Ubuntu 19.04) and inside a Docker Container (Ubuntu 19.04) running on Google Cloud Run.

In the console you will see:

Vaadin is running in DEBUG MODE.
Add productionMode=true to web.xml to disable debug features.

In the browser you can see also:

Webpack Error
ERROR in ../target/frontend/generated-flow-imports.js
Module not found: Error: Can't resolve '@vaadin/flow-frontend/flow-component-renderer.js' in '/home/admin_christian_ehmke_de/work/my-starter-project-2.0-SNAPSHOT.jar/target/frontend'
 @ ../target/frontend/generated-flow-imports.js 12:0-58

ERROR in ../target/frontend/generated-flow-imports.js
Module not found: Error: Can't resolve '@vaadin/flow-frontend/flow-component-renderer.js' in '/home/admin_christian_ehmke_de/work/my-starter-project-2.0-SNAPSHOT.jar/target/frontend'
 @ ../target/frontend/generated-flow-imports.js 12:0-58
ℹ ｢wdm｣: Failed to compile.

Switching back to Vaadin 14.0.8 solves the problem.

[earandap]

I am able to reproduce in Vaadin 14.0.11

mvn -Pproduction vaadin:package-for-production
[INFO] Scanning for projects...
[INFO]
[INFO] ------------< com.gmail.eduardo:vaadin-spring-boot-docker >-------------
[INFO] Building vaadin-spring-boot-docker 2.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- vaadin-maven-plugin:14.0.11:package-for-production (default-cli) @ vaadin-spring-boot-docker ---
[WARNING] The translated URL 'frontend://bower_components/vaadin-cookie-consent/theme/lumo/vaadin-cookie-consent.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-cookie-consent/theme/lumo/vaadin-cookie-consent.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-material-styles/typography.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-material-styles/typography.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-form-layout/theme/lumo/vaadin-form-item.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-form-layout/theme/lumo/vaadin-form-item.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-custom-field/theme/lumo/vaadin-custom-field.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-custom-field/theme/lumo/vaadin-custom-field.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-app-layout/theme/lumo/vaadin-drawer-toggle.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-app-layout/theme/lumo/vaadin-drawer-toggle.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-upload/theme/lumo/vaadin-upload.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-upload/theme/lumo/vaadin-upload.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-text-field/theme/lumo/vaadin-text-area.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-text-field/theme/lumo/vaadin-text-area.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-rich-text-editor/theme/lumo/vaadin-rich-text-editor.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-rich-text-editor/theme/lumo/vaadin-rich-text-editor.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-grid/theme/lumo/vaadin-grid-column.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-grid/theme/lumo/vaadin-grid-column.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-radio-button/theme/lumo/vaadin-radio-group.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-radio-button/theme/lumo/vaadin-radio-group.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-radio-button/theme/lumo/vaadin-radio-button.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-radio-button/theme/lumo/vaadin-radio-button.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-crud/theme/lumo/vaadin-crud-edit-column.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-crud/theme/lumo/vaadin-crud-edit-column.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-icons/vaadin-icons.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-icons/vaadin-icons.html'
[WARNING] The translated URL 'frontend://bower_components/iron-icon/iron-icon.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/iron-icon/iron-icon.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-ordered-layout/theme/lumo/vaadin-horizontal-layout.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-ordered-layout/theme/lumo/vaadin-horizontal-layout.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-list-box/theme/lumo/vaadin-list-box.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-list-box/theme/lumo/vaadin-list-box.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-text-field/theme/lumo/vaadin-number-field.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-text-field/theme/lumo/vaadin-number-field.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-login/theme/lumo/vaadin-login-overlay.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-login/theme/lumo/vaadin-login-overlay.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-lumo-styles/icons.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-lumo-styles/icons.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-grid/theme/lumo/vaadin-grid.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-grid/theme/lumo/vaadin-grid.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-crud/theme/lumo/vaadin-crud.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-crud/theme/lumo/vaadin-crud.html'
[WARNING] The translated URL 'frontend://bower_components/iron-list/iron-list.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/iron-list/iron-list.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-dialog/theme/lumo/vaadin-dialog.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-dialog/theme/lumo/vaadin-dialog.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-button/theme/lumo/vaadin-button.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-button/theme/lumo/vaadin-button.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-details/theme/lumo/vaadin-details.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-details/theme/lumo/vaadin-details.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-form-layout/theme/lumo/vaadin-form-layout.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-form-layout/theme/lumo/vaadin-form-layout.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-notification/theme/lumo/vaadin-notification.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-notification/theme/lumo/vaadin-notification.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-board/vaadin-board-row.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-board/vaadin-board-row.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-ordered-layout/theme/lumo/vaadin-vertical-layout.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-ordered-layout/theme/lumo/vaadin-vertical-layout.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-app-layout/theme/lumo/vaadin-app-layout.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-app-layout/theme/lumo/vaadin-app-layout.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-context-menu/theme/lumo/vaadin-context-menu.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-context-menu/theme/lumo/vaadin-context-menu.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-accordion/theme/lumo/vaadin-accordion.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-accordion/theme/lumo/vaadin-accordion.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-upload/theme/lumo/vaadin-upload-file.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-upload/theme/lumo/vaadin-upload-file.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-material-styles/color.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-material-styles/color.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-lumo-styles/spacing.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-lumo-styles/spacing.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-tabs/theme/lumo/vaadin-tabs.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-tabs/theme/lumo/vaadin-tabs.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-checkbox/theme/lumo/vaadin-checkbox.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-checkbox/theme/lumo/vaadin-checkbox.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-grid-pro/theme/lumo/vaadin-grid-pro-edit-column.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-grid-pro/theme/lumo/vaadin-grid-pro-edit-column.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-grid-pro/theme/lumo/vaadin-grid-pro.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-grid-pro/theme/lumo/vaadin-grid-pro.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-menu-bar/theme/lumo/vaadin-menu-bar.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-menu-bar/theme/lumo/vaadin-menu-bar.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-text-field/theme/lumo/vaadin-password-field.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-text-field/theme/lumo/vaadin-password-field.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-select/theme/lumo/vaadin-select.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-select/theme/lumo/vaadin-select.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-checkbox/theme/lumo/vaadin-checkbox-group.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-checkbox/theme/lumo/vaadin-checkbox-group.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-login/theme/lumo/vaadin-login-form.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-login/theme/lumo/vaadin-login-form.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-grid/theme/lumo/vaadin-grid-column-group.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-grid/theme/lumo/vaadin-grid-column-group.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-time-picker/theme/lumo/vaadin-time-picker.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-time-picker/theme/lumo/vaadin-time-picker.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-combo-box/theme/lumo/vaadin-combo-box.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-combo-box/theme/lumo/vaadin-combo-box.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-grid/theme/lumo/vaadin-grid-tree-toggle.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-grid/theme/lumo/vaadin-grid-tree-toggle.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-text-field/theme/lumo/vaadin-text-field.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-text-field/theme/lumo/vaadin-text-field.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-charts/vaadin-chart.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-charts/vaadin-chart.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-tabs/theme/lumo/vaadin-tab.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-tabs/theme/lumo/vaadin-tab.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-lumo-styles/style.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-lumo-styles/style.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-split-layout/theme/lumo/vaadin-split-layout.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-split-layout/theme/lumo/vaadin-split-layout.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-lumo-styles/typography.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-lumo-styles/typography.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-board/vaadin-board.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-board/vaadin-board.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-lumo-styles/sizing.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-lumo-styles/sizing.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-date-picker/theme/lumo/vaadin-date-picker.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-date-picker/theme/lumo/vaadin-date-picker.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-item/vaadin-item.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-item/vaadin-item.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-confirm-dialog/theme/lumo/vaadin-confirm-dialog.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-confirm-dialog/theme/lumo/vaadin-confirm-dialog.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-progress-bar/theme/lumo/vaadin-progress-bar.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-progress-bar/theme/lumo/vaadin-progress-bar.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-text-field/theme/lumo/vaadin-email-field.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-text-field/theme/lumo/vaadin-email-field.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-lumo-styles/color.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-lumo-styles/color.html'
[WARNING] The translated URL 'frontend://bower_components/vaadin-grid/theme/lumo/vaadin-grid-sorter.html' has no corresponding file on the filesystem, the file is addressed by path='/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-grid/theme/lumo/vaadin-grid-sorter.html'
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  2.456 s
[INFO] Finished at: 2019-11-01T16:48:42-03:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.vaadin:vaadin-maven-plugin:14.0.11:package-for-production (default-cli) on project vaadin-spring-boot-docker: Execution default-cli of goal com.vaadin:vaadin-maven-plugin:14.0.11:package-for-production failed: An import that ends with 'bower_components/vaadin-cookie-consent/src/vaadin-cookie-consent.html' cannot be resolved: the corresponding file '/Users/earandap/Downloads/vaadin-spring-boot-docker/target/frontend/bower_components/vaadin-cookie-consent/src/vaadin-cookie-consent.html' was not found.
[ERROR] Double check the corresponding import and verify the following:
[ERROR] * the import string is correct
[ERROR] * the file imported is either present in 'frontend://' directory of the project or in one of the project WebJar dependencies or in one of the regular jar dependencies
[ERROR] * if the file is present in one of the regular jar dependencies, it should be located in `META-INF/resources/frontend` directory in the jar
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException