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 ('82aa5d87157cea289b7cf3a233622b7e', -1, 1513602591, 1513602591, '36f2cd21', 4, 0, 0)

Line : 187
File : sessions.php