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 ('0ee2a4b68a4ed4df31aaef6b4675771d', -1, 1427922940, 1427922940, '36d3dee9', -1, 0, 0)

Line : 187
File : sessions.php