Error using ebook-convert via Calibre-Web

[seannymurrs]

I recently installed Calibre-Web on my seedbox. I also installed Calibre using the "isolated" install instructions (due to not having sudo access on my slot) in order to use the ebook-convert feature. When trying to convert an ebook to mobi via Calibre-Web's UI, I get the following error in my logs.

[2021-04-02 12:27:13,569] DEBUG {cps.tasks.convert:222} Failed to import PyQt module: PyQt5.QtGui with error: libGL.so.1: cannot open shared object file: No such file or directory
[2021-04-02 12:27:13,569] DEBUG {cps.tasks.convert:222} Traceback (most recent call last):
[2021-04-02 12:27:13,570] DEBUG {cps.tasks.convert:222}   File "runpy.py", line 194, in _run_module_as_main
[2021-04-02 12:27:13,570] DEBUG {cps.tasks.convert:222}   File "runpy.py", line 87, in _run_code
[2021-04-02 12:27:13,570] DEBUG {cps.tasks.convert:222}   File "site.py", line 45, in <module>
[2021-04-02 12:27:13,570] DEBUG {cps.tasks.convert:222}   File "site.py", line 41, in main
[2021-04-02 12:27:13,570] DEBUG {cps.tasks.convert:222}   File "calibre/ebooks/conversion/cli.py", line 401, in main
[2021-04-02 12:27:13,570] DEBUG {cps.tasks.convert:222}   File "calibre/ebooks/conversion/plumber.py", line 1271, in run
[2021-04-02 12:27:13,570] DEBUG {cps.tasks.convert:222}   File "calibre/ebooks/conversion/plugins/mobi_output.py", line 186, in convert
[2021-04-02 12:27:13,570] DEBUG {cps.tasks.convert:222}   File "bypy-importer.py", line 203, in exec_module
[2021-04-02 12:27:13,570] DEBUG {cps.tasks.convert:222}   File "calibre/ebooks/mobi/writer2/resources.py", line 12, in <module>
[2021-04-02 12:27:13,570] DEBUG {cps.tasks.convert:222}   File "bypy-importer.py", line 203, in exec_module
[2021-04-02 12:27:13,570] DEBUG {cps.tasks.convert:222}   File "calibre/ebooks/mobi/utils.py", line 13, in <module>
[2021-04-02 12:27:13,571] DEBUG {cps.tasks.convert:222}   File "bypy-importer.py", line 203, in exec_module
[2021-04-02 12:27:13,571] DEBUG {cps.tasks.convert:222}   File "calibre/utils/img.py", line 13, in <module>
[2021-04-02 12:27:13,571] DEBUG {cps.tasks.convert:222} ImportError: cannot import name 'QColor' from 'qt.core' (/mnt/mpaths/seannymurrs/calibre-bin/calibre/lib/calibre-extensions/python-lib.bypy.frozen/qt/core.pyc)
[2021-04-02 12:27:13,571]  INFO {cps.tasks.convert:140} ebook converter failed with error while converting book

I originally posted this on the Github page for Calibre-Web, but I was directed here since it's appears to be an issue with the ebook-convert part of Calibre (and not directly related to Calibre-Web). I know very little about Python (and Linux in general), but it seems like I'm missing some sort of module. Is this due to the fact that I had to do an "isolated" install?

[kovidgoyal]

Read the first line in that error you posted, you are missing libGL

[seannymurrs]

Originally Posted by kovidgoyal

Read the first line in that error you posted, you are missing libGL

Ok, thanks. Unfortunately, with it being installed on a seedbox, I’m not sure if I’ll be able to install the necessary dependencies. At least I know where to start looking, now. Thanks again.

[seannymurrs]

Originally Posted by kovidgoyal

Read the first line in that error you posted, you are missing libGL

It looks like installing libGL isn't going to be possible for my situation. Is there any way to use the ebook-convert tool without this dependency, or am I out of luck?

[kovidgoyal]

You are out of luck.