phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb/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 ('2fda776b2e399ee9d55c2877d9f6ed3b', -1, 1503343809, 1503343809, '369c3668', -1, 0, 0)

Line : 187
File : sessions.php