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MySQL Client Library Version Mismatch in Rails: How to Fix the 'Incorrect MySQL client library version!' Error?

Susan Sarandon

Dec 01, 2024 pm 01:45 PM

MySQL Client Library Version Mismatch in Rails: How to Fix the

Error in Rails Application: MySQL Client Library Version Mismatch

When attempting to establish a database connection with a Rails application, developers may encounter the following error:

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

This error indicates a conflict between the MySQL client library version used by the mysql2 gem and the actual version installed on the system. To resolve this issue, follow these steps:

Uninstall the mysql2 gem:

gem uninstall mysql2

Reinstall the mysql2 gem:

bundle install

This command will automatically reinstall the mysql2 gem with the correct dependencies for your system's MySQL client library version. After reinstalling the gem, the application should connect successfully to the MySQL database.

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