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 ('e18cfef03501d8f7122d2044a77a2bf8', -1, 1490828006, 1490828006, '36c596ff', 13, 0, 0)

Line : 189
File : sessions.php