Error when importing Swagger 2.0 json file

Describe the bug When trying to import a Swagger 2.0 json file, I get the following error:

The file does not contain a valid specification.

StackTrace

TypeError [ERR_INVALID_ARG_TYPE]: The "data" argument must be one of type string, Buffer, TypedArray, or DataView. Received type undefined
    at Hash.update (internal/crypto/hash.js:70:11)
    at importFolderItem (/Applications/Insomnia.app/Contents/Resources/app.asar/node_modules/insomnia-importers/src/importers/swagger2.js:161:6)
    at /Applications/Insomnia.app/Contents/Resources/app.asar/node_modules/insomnia-importers/src/importers/swagger2.js:129:12
    at Array.map (<anonymous>)
    at parseEndpoints (/Applications/Insomnia.app/Contents/Resources/app.asar/node_modules/insomnia-importers/src/importers/swagger2.js:128:46)
    at Object.module.exports.convert (/Applications/Insomnia.app/Contents/Resources/app.asar/node_modules/insomnia-importers/src/importers/swagger2.js:68:21)
    at async module.exports.convert (/Applications/Insomnia.app/Contents/Resources/app.asar/node_modules/insomnia-importers/index.js:19:23)
    at async importRaw (file:///Applications/Insomnia.app/Contents/Resources/app.asar/bundle.js:42846:15)
    at async Object.importUri (file:///Applications/Insomnia.app/Contents/Resources/app.asar/bundle.js:42808:18)
    at async file:///Applications/Insomnia.app/Contents/Resources/app.asar/bundle.js:79047:24

Expected behavior File should import without issues.

Desktop (please complete the following information):

• OS: MacOS 10.15.7
• App Version: 2020.4.1

Additional context

• The Swagger Editor does find several warnings, but no errors, so the file should parse.
• The file is in JSON format, not YAML.

[avevlad]

Workaround:

1. open http://editor.swagger.io/
2. paste existing swagger2 test -input file
3. (transform JSON->YAML when asked, if necessary)
4. Edit > Convert to OpenAPI 3
5. export (as JSON or YAML, depending on existing test)

[jceb]

Same here, the error got solved.