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MySQL 3,115 views Last updated recently

'Foreign key constraint fails' on localhost

Expert Solution

Follow the steps below to resolve this error.

Explanation

This is a common error in MySQL related to Constraints.

It typically happens when:

  1. Configuration is incorrect.
  2. Syntax errors exist in the code.
  3. Services are not running.

Solution

To fix 'Foreign key constraint fails' on localhost, follow these steps:

  1. Check your log files.
  2. Verify your configuration.
  3. Restart the service.
# Example command
php artisan optimize:clear

Note: Always backup your data before running commands.

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