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 ('9dbff4a9f39e21d89e893d70adac7d9b', -1, 1513615106, 1513615106, '36a72c20', 4, 0, 0)

Line : 187
File : sessions.php