phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './thewi_at_klaus_phpbb_8/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) VALUES ('add13e677aeed03d92c525c223cb064c', -1, 1455255284, 1455255284, '3213be90', 5, 0)

Line : 189
File : sessions.php