Upgraded from 2.3.4 to 2.3.5
Then wanted to go to 2.4.8 but receive message Database error in line 232:
Note: also posted issue on GitHub
Micha asked a question on Github you seems to haven't noticed yet. Please open phpMyAdmin on your webserver if possible and try to execute the following database query.
ALTER TABLE [userdata_table_name] CHANGE last_login last_login TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP
This is the query that caused the error during your update attempt. Noone mentioned an error in the update process before for that position of the code. Must be something special with your server configuration.
Please add further info beside the error message from phpMyAdmin to your report:
Trenne niemals Müll, denn er hat nur eine Silbe!