[web2py] Error in mysql connection

Hi all, I am facing some issue to connect to the database with password including '@' symbol. without including '@' symbol in the password, it works. Is this a bug or am I missing something mysql://root:pass@123@localhost/csautomation It workes for following string: mysql://root:pass123@loca

[web2py] error in mysql ?

this is the error (1452, 'Cannot add or update a child row: a foreign key constraint fails (`samuel$otra`.`article_category`, CONSTRAINT `article_category_ibfk_1` FOREIGN KEY (`parent_id`) REFERENCES `article_category` (`id`) ON DELETE CASCADE)') help me please --