converting epub to pdf fails with error "ImportError: libpodofo.so.1: cannot open shared object file: No such file or directory"

[strangeattractor]

This problem started happening when I updated to calibre version 6.18

I'm running calibre on Ubuntu Mate 23.04 Lunar Lobster

I attempted to convert an epub to a pdf, and the conversion did not complete. It gave an error that mentioned libpodofo.so.1

I wondered if it was a missing dependency in Ubuntu, so I installed libpodofo-utils. That did not fix the problem.
sudo apt install libpodofo-utils

When I look in the calibre program folder /opt/calibre/lib/ I see a file named libpodofo.so.0.10.0

Perhaps this is a different version than what calibre is looking for?

This happened with more than one epub. I have attached one.

Traceback (most recent call last):
  File "runpy.py", line 196, in _run_module_as_main
  File "runpy.py", line 86, in _run_code
  File "site.py", line 47, in <module>
  File "site.py", line 43, in main
  File "calibre/utils/ipc/worker.py", line 215, in main
  File "calibre/gui2/convert/gui_conversion.py", line 38, in gui_convert_override
  File "calibre/gui2/convert/gui_conversion.py", line 25, in gui_convert
  File "calibre/ebooks/conversion/plumber.py", line 1281, in run
  File "calibre/ebooks/conversion/plugins/pdf_output.py", line 183, in convert
  File "calibre/ebooks/conversion/plugins/pdf_output.py", line 249, in convert_text
  File "calibre/ebooks/pdf/html_writer.py", line 1132, in convert
  File "calibre/ebooks/pdf/html_writer.py", line 57, in data_as_pdf_doc
  File "calibre/utils/podofo/__init__.py", line 16, in get_podofo
ImportError: libpodofo.so.1: cannot open shared object file: No such file or directory

[Kovid Goyal (kovid)]

Fixed in branch master. The fix will be in the next release. calibre is usually released every alternate Friday.