phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2e69028bae34c7b265faf79b9d0feca5', -1, 1508595146, 1508595146, '36a269f1', -7, 0, 0)

Line : 187
File : sessions.php