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 ('4833d3a3c16d11d4e3a62e5d4745c308', -1, 1502889139, 1502889139, '36a6986f', 2, 0, 0)

Line : 189
File : sessions.php