ps16 error reporting can break json response

[getdatakick]

I found error message about the creation date that somehow I ad missed previously:

Originally posted by @musicpanda in https://github.com/thirtybees/psonesixmigrator/issues/28#issuecomment-1151485301

[getdatakick]

There is not much we can do here, as module code is called too late (error message is already sent to the output)

We would have to bypass the ps16 entry point (index.php / dispatcher), and instead introduce new custom entry point that would initialize error reporting in reliable way -- no display of errors to the output