Hi Nick,

19.09.2019 20:59 - Nick Bright schrieb:
> I'm working on upgrading to v6, and in the process I'm getting an error
> on Step 31/44 in DBUpdate-to-6.pl, clearly caused by some error in the
> database.
>(...)
> [Thu Sep 19 13:31:20 2019] DBUpdate-to-6.pl: DBD::mysql::db do failed:
> Cannot add or update a child row: a foreign key constraint fails

You are missing (or have wrong) key constraints. One quick and dirty possibility
would be to turn off the key constraint check during update.

Better ask your database administrator, how to solve this issue.


--
Florian