Sync failure after Clear Unused Tags from Browse window

Syncing & AnkiWeb
1

Hello,
Open Anki.
Click Sync. (works ok)

Click Browse.
Click menu Notes → Clear Unused Tags.
Close Browse window.
Click Sync. (see ERROR message below)

A network error occurred.
Error details: error sending request for url(): connection error: bad protocol version

Screen Shot 2021-05-29 at 4.07.07 PM
Screen Shot 2021-05-29 at 4.07.07 PM1064×566 96.5 KB

debug info:

Anki 2.1.44 (b2b3275f) Python 3.8.6 Qt 5.14.2 PyQt 5.14.2
Platform: Mac 10.16 (macOS Big Sur 11.3.1)
Flags: frz=True ao=True sv=2
Add-ons, last update check: 2021-05-28 19:19:28    

===Add-ons (active)===
(add-on provided name [Add-on folder, installed at, version, is config changed])
AMBOSS add-on ['0amboss_addon', 2021-03-04T07:41, 'None', '']
Batch Editing ['291119185', 2019-10-10T10:31, 'None', '']
Enhance main window ['877182321', 2020-12-22T23:42, 'None', '']
Frozen Fields ['516643804', 2020-02-29T23:12, 'None', '']
Image Occlusion Enhanced for Anki 21 alpha ['1374772155', 2020-04-27T22:21, 'None', '']
Picmonic Anki Add-On ['40737180', 2021-05-04T19:15, 'None', mod]
Pop-up Dictionary beta ['153625306', 2019-07-05T07:57, 'None', '']
Review Heatmap ['review_heatmap', 2018-10-28T18:06, 'None', '']
Special Fields ['1102281552', 2021-02-13T17:52, 'None', '']

===IDs of active AnkiWeb add-ons===
1102281552 1374772155 153625306 291119185 40737180 516643804 877182321

===Add-ons (inactive)===
(add-on provided name [Add-on folder, installed at, version, is config changed])

Thank you

2

That error seems unrelated, and looks more like temporary network issues, or something like a firewall running on your machine.

3

Thank you for your response. However, I can consistently recreate the problem many times (Sync failure after Clear Unused Tags).

I am not sure its a network issue because I can recreate the problem across different network environments.

I am not sure its a firewall problem because I am just using the MacOS (Big Sur 11.4) default firewall settings.

Also, Sync is always successful before I execute Clear Unused Tags.

Any other suggestions on how to debug this problem please?

4

I am not able to reproduce the problem here. If you can reproduce it without any add-ons, please see if you still get the issue using the latest alpha version in the beta testing section of these forums.

5

FYI, the problem no longer occurs after upgrading to macOS Big Sur 11.5.1 (and Anki 2.1.45). Thanks.

6

Hello, may I ask that you anonymize (or delete) this account please?

7

All done