LotW download fails with SQL driver error

[pa5kt]

I have a wavelog system at my hosting provider.
When I do the LotW update cron job a large file (20MB) with all qsl confirmations since 1900 is downloaded. Direct after the download I get an disconnect error from the mysql server and the file is not processed. I do not have access to the log files of the mysql server so difficult to debug.
Manual import of the file works fine.
Is the start date always 1-1-1900 or will that change after the first download is processed?
If it changes where is it stored, then I can change that date?

[phl0]

If this is a self-hosted instance enable debug mode and increase debug level. Then you should find a log file in application/logs.

[pa5kt]

My question starts with: I have a wavelog system at my hosting provider.
My question is not how to debug.
My questions is if that date of 1-1-1900 is fixed and if I can change it.

[pa5kt]

I found the answer myself.
In Logbook_model.php is the function lotw_last_qsl_date(), which uses a query to find the latest lotw qsl date from logfiles.
If no recent date can be found it defaults to '1900-01-01'.
Somehow this goes wrong and it always takes the default instead of the latest lotw qsl date.
To solve the sql timeout I changed the default to a more recent date.