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 ('b28c9d1f2edda7d817a3464f622c6d3a', -1, 1537509023, 1537509023, '36c6cd99', -11, 0, 0)

Line : 187
File : sessions.php