phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './dancemo/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 ('6a86d1ac053c75c388aec32b0761a92e', -1, 1472093410, 1472093410, '3650e3ed', 0, 0, 0)

Line : 193
File : sessions.php