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 ('4f70ce9eeb9d06bdb08f44ba065b3b08', -1, 1513634835, 1513634835, '365270c1', 2, 0, 0)

Line : 187
File : sessions.php