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 ('18a3a1d5cb98c19e9e38db880ac14f34', -1, 1529898013, 1529898013, '369f5b75', 0, 0, 0)

Line : 187
File : sessions.php