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 ('fd02c463ab3725b68f6c80cd6638c34a', -1, 1519566439, 1519566439, '369f1e1a', 12, 0, 0)

Line : 187
File : sessions.php