In this post, you’ll learn more about the MariaDB Error 1621 ER_VARIABLE_IS_READONLY with the details of the error message and why you receive this error
Maria DB Error Description
MariaDB Error 1621 – ER_VARIABLE_IS_READONLY with the sqlState HY000
Error Description for the MariaDB Error ER_VARIABLE_IS_READONLY
%s variable ‘%s’ is read-only. Use SET %s to assign the value