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 ('91d5c703b1d6eea2d16f39b6f1750c06', -1, 1548078979, 1548078979, '6b151046', 11, 0, 0)

Line : 186
File : sessions.php