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 ('e51e6c8eb5e98bb56df8f52a639ef309', -1, 1513470697, 1513470697, '365270c1', 5, 0, 0)

Line : 187
File : sessions.php