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answer fix when i tried to import a table in mysql it just returns me ' ERROR 1215 (HY000): Cannot add foreign key constraint "

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Syntax error or access violation: 1072 Key column 'user_id' doesn't exist in table (SQL: alter table `groups` add constraint `groups_user_id_foreign` foreign key (`user_id`) references `users` (`id`))

SET FOREIGN_KEY_CHECKS = ON; MySQL said: Documentation #2006 - MySQL server has gone away

SQLSTATE[23000]: Integrity constraint violation: 19 FOREIGN KEY constraint failed

General error: 1215 Cannot add foreign key constraint laravel

SQLSTATE[23000]: Integrity constraint violation: 4025 CONSTRAINT `categories.name` failed for `apolonia_db`.`categories`

SQLSTATE[HY000]: General error: 1215 Cannot add foreign key constraint

error code 1215 cannot add foreign key constraint

Uncaught mysqli_sql_exception: Incorrect table definition; there can be only one auto column and it must be defined as a key in

sqlstate[hy000]: general error: 1005 can't create table (errno: 150 "foreign key constraint is incorrectly formed")

SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`apolonia_db`.`shops`, CONSTRAINT `shops_parent_pharmacy_id_foreign` FOREIGN KEY (`parent_pharmacy_id`) REFERENCES `shops` (`id`))

SQLSTATE[HY000]: General error: 1005 Can't create table ``.`labels` (errno: 150 "Foreign key constraint is incorrectly formed") (SQL: alter table `labels` add constraint

foreign key constraint failed

foreign key constraint failed