phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './myforum/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('46f20186f673f36fc3c8e0f8d4d0be90', -1, 1771117702, 1771117702, 'd849d871', -4, 0, 0)

Line : 187
File : sessions.php