phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c333f587c2bb131e5f137b63e520d560', -1, 1715155600, 1715155600, '0d3b3d77', -4, 0, 0)

Line : 189
File : sessions.php