[ciccio]

Hi.
calibre, version 3.31.0
Win10

I have been using the "download metadata" tool forever. Just yesterday, all of a sudden, this error message appears when used:


Traceback (most recent call last):
File "site-packages\calibre\utils\ipc\simple_worker.py", line 289, in main
File "site-packages\calibre\ebooks\metadata\sources\worker.py ", line 102, in single_identify
File "site-packages\calibre\ebooks\metadata\sources\update.py ", line 79, in patch_plugins
File "site-packages\calibre\ebooks\metadata\sources\update.py ", line 62, in patch_search_engines
File "<string>", line 11, in <module>
ImportError: No module named polyglot.builtins

Any clue on how to solve this? THANKS!
ciccio