phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './why9work_phpbb1/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) VALUES ('6d6ebb9c2c8eea82858524d2fb4f766e', -1, 1425500037, 1425500037, 'adf5362a', -9, 0)

Line : 158
File : sessions.php