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 ('d570a8ea296a9bf3dbc28e8e04ce7609', -1, 1527314931, 1527314931, '36c46ede', 2, 0, 0)

Line : 187
File : sessions.php