Charset and Collation Settings Impact on MySQL Performance
SQLSTATE[HY000]: General error: 1267 Illegal mix of collations ( utf8mb4_unicode_ci,IMPLICIT) and (utf8mb4_general_ci,IMPLICIT) for operation '=' (SQL: update `categories` set `image` = category/3/qJydwPVykL01lUAqSIpf1RM4JgXZx6sv1Jnfpx1K.jpeg ...