PermissionError: [Errno 13] Permission denied: b''

[Houwarnick]

>>> import imgkit
>>> html = "\n  <link rel=\"stylesheet\" href=\"https://fonts.googleapis.com/css?family=Open+Sans:400italic,600italic,300,400,600\" type=\"text/css\" media=\"all\" />\n  <style type=\"text/css\" media=\"all\">\n    html {\n      font-size: 62.5%;\n      box-sizing: border-box;\n    }\n    body {\n      margin: 0;\n      padding: 0;\n      font-size:10pt;\n      line-height: 1.5;\n      box-sizing: border-box;\n      font-family: \"Open Sans\", arial, sans-serif;\n    }\n    p, div {\n      margin: 0;\n      min-height: 18px;\n      box-sizing: border-box;\n    }\n    ol, ul {\n      margin: 0;\n    }\n  </style>\n  <p>asdgfa<span style='color: #0D73D9;'>asdfasdfasdfasdfasdgasdfa</span><span style='color: #E51515;'>sadasdfa</span><span style='font-size: 14pt;'><span style='color: #E51515;'>asdgasdf</span><span style='color: #FCB104;'>asdgasdfasdfhasdf</span></span></p><p><span style='font-size: 14pt;'><span style='color: #A742FF;'>PURPLE TEXT IS IMPORTANT</span></span></p>"
>>> options = {'format': 'png', 'xvfb': ''}
>>> test = imgkit.from_string(html, False, options=options)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/houstonwarnick/.local/share/virtualenvs/letter-service-eh0o3bg_/lib/python3.6/site-packages/imgkit/api.py", line 90, in from_string
    return rtn.to_img(output_path)
  File "/Users/houstonwarnick/.local/share/virtualenvs/letter-service-eh0o3bg_/lib/python3.6/site-packages/imgkit/imgkit.py", line 213, in to_img
    stderr=subprocess.PIPE)
  File "/usr/local/Cellar/python3/3.6.4_2/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 709, in __init__
    restore_signals, start_new_session)
  File "/usr/local/Cellar/python3/3.6.4_2/Frameworks/Python.framework/Versions/3.6/lib/python3.6/subprocess.py", line 1344, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
PermissionError: [Errno 13] Permission denied: b''

I've been able to get it working with my local macOS environment without using xvfb, but once I try in an AlpineLinux environment that requires xvfb I get this error. I can reproduce the error with my local environment by using the xvfb flag there.

[parthasaradhikonda]

Any update on this?

[mike1703]

this is the reason for the issue: https://bugs.alpinelinux.org/issues/9617
In config.py the xvfb-run command is not found and therefore b'' is stored. You cannot execute the empty string.

A possible solution until xvfb-run is packaged in alpine is to add the file manually (the one from here works for example: https://github.com/cjpetrus/alpine_webkit2png)

There should be some error handling code if no executable is found to assist in the debugging.

[mike1703]

opened pull request #33 to have better error handling which shows an error if xvfb-run is not available

[klauskades]

Just as a short update in case sombody still hast the problem. In my case installing xvfb in Ubuntu 20.04 resolved the issue:

sudo apt-get install xvfb

[jarrekk]

PermissionError: [Errno 13] Permission denied: b''

This error is caused by not found xvfb-run, so b'' means the final xvfb-run path. Fixed in https://github.com/jarrekk/imgkit/blob/V1.1.0/imgkit/config.py