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 ('cb9e5f3c7d6ecfe9c3d101ae1fad2aff', -1, 1503282738, 1503282738, '36a26ff7', 1, 0, 0)

Line : 189
File : sessions.php