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 ('973ad64fda42f3cfb03d44f6a8b16f08', -1, 1529326819, 1529326819, '369e0f61', -2, 0, 0)

Line : 187
File : sessions.php