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

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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`))

General error: 1215 Cannot add foreign key constraint laravel

SQLSTATE[HY000]: General error: 3780 Referencing column 'role_id' and referenced column 'id' in foreign key constraint 'user_role_id foreign' are incompatible.

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

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

error code 1215 cannot add foreign key constraint

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

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

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