ErrNo #0
SQL=REPLACE INTO `int13_overrider` (...)
I wrote to the hosting provider support and they said that Akeeba made a huge single query of over 200,000 characters, which they cannot process due to the server security restrictions. They have tried and manually split the query into two, which helped.
My question is, how to configure Akeeba Backup to create smaller queries in the first place? They said also something about PDO driver, which could help, but I don't know what that even means.