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 ('51eb32075e06dcc2c09ee33938688e0d', -1, 1529368665, 1529368665, '36c6561c', 41, 0, 0)

Line : 187
File : sessions.php