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 ('850b7c90acaf33ed9e78a86a952e210c', -1, 1472562325, 1472562325, '6ca2db2d', -9, 0)

Line : 158
File : sessions.php