BUG | After holding down the shift key to start anki, there is still an error message, please help me to see.

Anki Help
1

Anki 2.1.19 (3c8690ae) Python 3.8.0 Qt 5.14.0 PyQt 5.13.2
Platform: Windows 10
Flags: frz=True ao=False sv=1

Caught exception:
Traceback (most recent call last):
File “aqt\browser.py”, line 398, in paint
KeyError: 7

Caught exception:
Traceback (most recent call last):
File “aqt\browser.py”, line 398, in paint
KeyError: 7

Caught exception:
Traceback (most recent call last):
File “aqt\browser.py”, line 398, in paint
KeyError: 7

Caught exception:
Traceback (most recent call last):
File “aqt\browser.py”, line 398, in paint
KeyError: 7

Caught exception:
Traceback (most recent call last):
File “aqt\browser.py”, line 398, in paint
KeyError: 7

Caught exception:
Traceback (most recent call last):
File “aqt\browser.py”, line 398, in paint
KeyError: 7

Caught exception:
Traceback (most recent call last):
File “aqt\browser.py”, line 398, in paint
KeyError: 7

Caught exception:
Traceback (most recent call last):
File “aqt\browser.py”, line 398, in paint
KeyError: 7

2

Please see When problems occur - Frequently Asked Questions