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 ('c8028b5157080b933756c0d39f33dcde', -1, 1508594983, 1508594983, '36a269f1', -1, 0, 0)

Line : 187
File : sessions.php