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 ('76958c3c37d153a8e5a27d84f82a7f42', -1, 1513546829, 1513546829, '365acf4b', 1, 0, 0)

Line : 187
File : sessions.php