phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c1cadcd5912dcc54bd097526e9158395', -1, 1561000891, 1561000891, '36a11ff7', 9, 0, 0)

Line : 189
File : sessions.php