[SOLVED] UNABLE TO DOWNLOAD METADATA

[JanSH]

Yes, I was thinking maybe within weeks, not hours

[skassmir]

I have the same problem. It started after I downloaded v3.31. I uninstalled and reinstalled v3.30 with no success. Here is my error message:

calibre, version 3.30.0
ERROR: Download failed: Failed to download metadata. Click Show Details to see details

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

[theducks]

Originally Posted by nconnor

Happening on Mac as well, so I suspect it's not an MS issue.

I think you are correct. Someone figured out deleting the metadata cache.json did a 1-shot fix. so something is probably corrupting the cache

[janus56]

The same problem and the same error message.
No problem in laptop which I have opened the first time after month.

[jhowell]

The string "polyglot.builtins" appears in a set of source code changes recently made by Kovid.

[Stealsack]

Can confirm that Win 64 3.21.0 has the issue.
Deleting the metadata-sources-cache.json allows me to search metadata again.

[mikberger]

Same problem here.
OSX 10.13.6 on a Macbook Pro.

Love Calibre. Thankyou.

[Mireille005]

Originally Posted by jackie_w

Yes, but bear in mind that the only person who can fix this is Kovid Goyal who lives in India where it's currently the middle of the night. So let's keep expectations realistic

Than poor Kovid Goyal to wake up to a community in turmoil.
On the other hand, he knows Calibre is really loved!

[disconnected]

Same problem.
I've no doubt it will be fixed soon but it is a scary reminder of how much I depend on Calibre. I hope Kovid isn't planning to retire anytime soon.

[lburg801]

I have done many of the same troubleshooting steps others have taken above and also, like others, Calibre had worked earlier. Laptop running Win7

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

[Corpsegoddess]

Originally Posted by theducks

I think you are correct. Someone figured out deleting the metadata cache.json did a 1-shot fix. so something is probably corrupting the cache

Where can I find that cache file on my PC?

[BetterRed]

Originally Posted by Corpsegoddess

Where can I find that cache file on my PC?

BR

[Corpsegoddess]

Thank you for the quick reply!

Edit: Spoke too soon. That worked for the first book I tried, and now it's back to telling me it can't find metadata, even when I have the isbn.

[BetterRed]

Originally Posted by jhowell

The string "polyglot.builtins" appears in a set of source code changes recently made by Kovid.

But, that change was made after 3.31 was released, in fact only a few hours ago. How could it immediately affect everyone on every platform.

Surely Kovid wouldn't be pushing changes. Timebomb. The metadata-sources-cache.json contains code that appears to import from polyglot.builtins

Be interesting to know if anyone who runs calibre from very latest source is getting the problem.

BR

[Corpsegoddess]

Originally Posted by BetterRed

But, that change was made after 3.31 was released, in fact only a few hours ago. How could it immediately affect everyone on every platform.

Surely Kovid wouldn't be pushing changes. Timebomb. The metadata-sources-cache.json contains code that appears to import from polyglot.builtins

Be interesting to know if anyone who runs calibre from very latest source is getting the problem.

BR

I started experiencing this last night, and I didn't install the 3.31 patch until about an hour ago. Deleting the cache worked for the first book I tried downloading metadata for, but doesn't work with any subsequent attempts, even if I have an isbn for them.