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 ('93dc35a73da1be1a5a8e5f6caf9f9b73', -1, 1511587067, 1511587067, '36e0661a', -10, 0, 0)

Line : 189
File : sessions.php