phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './twisty_phpb1/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 ('eea0c59815e16e34bbd73cc7845c7348', -1, 1513498568, 1513498568, '36932899', 5, 0, 0)

Line : 187
File : sessions.php