phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table '.\head_f\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 ('aae0abe0433e4edb9b5e83cd6936d474', -1, 1508608402, 1508608402, '3650ec30', -4, 0, 0)

Line : 187
File : sessions.php