https://bugs.winehq.org/show_bug.cgi?id=56611
--- Comment #8 from Jeremy Newman jnewman@codeweavers.com --- These errors are coming from the move to a new MariaDB DB instance. This has a setting GLOBAL.sql_mode STRICT_TRANS_TABLES that is enabled compared to our old host. This causes the 'field X doesn't have a default value' errors and others. Normally I would just disable that setting, but the DB provider does not let me change those settings directly from their UI. I have filed a ticket with them to see if there is another way to do it, but I imagine they may say no.
So the only other alternative is to continue patching the AppDB database and code so it works with this.