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 ('dc441a7f7f5d92c7a4068df9a77d64fd', -1, 1715051787, 1715051787, '0391821f', -4, 0, 0)

Line : 189
File : sessions.php