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 ('cccbda6e0645af4053f19c1d0c6e8c83', -1, 1516496650, 1516496650, '36e2b3f7', -4, 0, 0)

Line : 189
File : sessions.php