Not compatible with PHP 8.4

[joostdebruijn]

After switching to PHP 8.4 I get the following message: PHP Deprecated: DateTimeImmutable::format(): Passing null to parameter #1 ($format) of type string is deprecated. This deprecation happens in src/Models/LogToDbCreateObject.php on line 57 when running it with PHP 8.4. It's a bit weird, because at that line config('logtodb.datetime_format') is called and it returns null. However, I don't have the logtodb config file published, so I would expect it will use the defaults from the package, but it seems that doesn't happen.

When I fix this, this package still doesn't work on PHP 8.4. I receive another error: CRITICAL: There was an error while trying to write the log to a DB, log record pushed to error_log() {"exception":{"message":"Call to a member function connection() on null","code":0,"file":"[...]/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php","line":1850}}.

Not sure what goes wrong here after upgrading to PHP 8.4. Maybe I've some time later this week to dive into it.

[joostdebruijn]

Part of this happens because of other dependencies not being compatible with PHP 8.4 in my setup. One issue is left and I submitted a PR for that. See #66.