sed -i '' 's/utf8mb4_0900_ai_ci/utf8_general_ci/g' backup.sql sed -i '' 's/CHARSET=utf8mb4/CHARSET=utf8/g' backup.sql
https://tecadmin.net/resolved-unknown-collation-utf8mb4_0900_ai_ci/
sed -i '' 's/utf8mb4_0900_ai_ci/utf8_general_ci/g' backup.sql sed -i '' 's/CHARSET=utf8mb4/CHARSET=utf8/g' backup.sql
https://tecadmin.net/resolved-unknown-collation-utf8mb4_0900_ai_ci/