Error occurred when sending email of a sales order with PDF print format setting

Description of the issue

I’m running ERPNext on my Mac Docker Desktop and having an issue where it cannot email a sales order in PDF print format. From the error log, it seems the problem is related to the package “wkhtmltopdf”. Tried to find a solution in the forum but all the answers just point the cause to the incorrect installation/version of “wkhtmltopdf”, but I believe that is not my case.

I tested “wkhtmltopdf” command in the docker container(erpnext-worker-default_1) to manually convert an html file into a pdf file for testing, and that worked without any issues.

Context information (for bug reports)

macOS Monterey

Docker Desktop 4.2.0 (70708)

bench version erpnext 13.x.x-develop frappe 14.x.x-develop

wkhtmltopdf --version wkhtmltopdf 0.12.6 (with patched qt)

Steps to reproduce the issue

1. setup a Gmail email account
2. create a simple sales order
3. email it

Stacktrace / full error message if available

stacktrach from the error log

  File "/home/frappe/frappe-bench/apps/frappe/frappe/email/doctype/email_queue/email_queue.py", line 123, in send
    message = ctx.build_message(recipient.recipient)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/email/doctype/email_queue/email_queue.py", line 240, in build_message
    message = self.include_attachments(message)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/email/doctype/email_queue/email_queue.py", line 300, in include_attachments
    print_format_file = frappe.attach_print(**attachment)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 1588, in attach_print
    content = get_print(doctype, name, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 1554, in get_print
    return get_pdf(html, options=pdf_options, output=output)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/pdf.py", line 37, in get_pdf
    filedata = pdfkit.from_string(html, False, options=options or {})
  File "/home/frappe/frappe-bench/env/lib/python3.9/site-packages/pdfkit/api.py", line 72, in from_string
    return r.to_pdf(output_path)
  File "/home/frappe/frappe-bench/env/lib/python3.9/site-packages/pdfkit/pdfkit.py", line 156, in to_pdf
    raise IOError('wkhtmltopdf reported an error:\n' + stderr)

 Queue Name: 573d7378a8

[revant]

mysite.localhost is simple local way to access and check erpnext on a machine. Frappe/ERPNext is ideally meant to be deployed as a web app under a https domain name. Everything is geared towards production setup.

The *.localhost sites are used to check app features locally or during local development. During development the .devcontainer directory is gitignored and it can have a complex configuration with custom docker-compose.yml based on devcontainer-example.

[a157147899]

@revant thanks for your help. Finally solved the issue by adding a host entry.

Also, I am wondering that if there is a particular reason for not adding this host mapping in docker-compose.yml by default. I’ve noticed that the site name is already defined in .env file, so I guess everyone will encounter the same issue regardless of using Docker Desktop or native docker, correct?