How to Fix a 'Incorrect MySQL client library version!' Error in a Rails Application?

Rails Application MySQL Connection Error

Upon attempting to connect to the MySQL server through a Rails application, an error may arise:

Incorrect MySQL client library version! This gem was compiled for 6.0.0 but the client library is 5.0.27. (RuntimeError)

Resolution

To rectify this issue, uninstall and reinstall the mysql2 gem. Follow these steps from the Rails app directory:

gem uninstall mysql2

Accept the uninstallation prompt and proceed to reinstall the gem:

bundle install

This command will fetch dependencies and install the mysql2 gem with native extensions, resolving the version mismatch issue.

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