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 ('dea85b3d5b00e1d00965cd1e5d46d7b7', -1, 1715308919, 1715308919, '12de756d', -7, 0, 0)

Line : 189
File : sessions.php