[Solved] MySQL ERROR 1231 (42000):Variable 'character_set_client' can't be set to the value of 'NULL'

If you try to import dumped file, and there is such an error, try using mysql console with options and then import sql file

mysql -u root -p --max_allowed_packet=6400M

Troubleshoot

If you haven't acess to console or the previous doesn't work

set global max_allowed_packet=10000000000;