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Error 1452: Cannot add or update a child row: a foreign key constraint fails (`jwancouk_ukq`.`qauk_posts`, CONSTRAINT `qauk_posts_ibfk_1` FOREIGN KEY (`userid`) REFERENCES `qauk_users` (`userid`) ON DELETE SET NULL)

 

I have installed two Q&A sharing the same user table. I get the above error when a new user tries to post a question one one of the sites.

I've tried for some time to figure out how to solve it but I'm a developer. Any help would be appreciated. Thanks.

 

Q2A version: 1.5

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