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 ('fec7a43ef633f5dcd439c1d42bdc919e', -1, 1526976187, 1526976187, '36c45659', 4, 0, 0)

Line : 187
File : sessions.php