Database or site_config.json may be corrupted - Backup

Dear Team,

bench --site xyz.com backup --with-files
b"mysqldump: Error 1194: Table ‘__global_search’ is marked as crashed and should be repaired when dumping table __global_search at row: 83061\n"
Backup failed for Site xyz.com. Database or site_config.json may be corrupted

erp is working well but i am not getting the backup.