octopus Yes, MariaDB is running in strict mode here.
There's no way that you can turn it off via the dashboard.
Many modern apps include a way to set the SQL mode in their own configuration, or avoid the problem altogether by specifying defaults in the database schema.
If your app isn't able to do either of those then feel free to email support @ opalstack.com with the details and we'll try to help you find a workaround.