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 ('00c7b81185680f2b76849d7aac503e92', -1, 1534281681, 1534281681, '36c67e6e', -7, 0, 0)

Line : 187
File : sessions.php