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 ('2ef4118d1e06df2e5c26d7bfc31228b9', -1, 1715096415, 1715096415, '12de8ae6', -9, 0, 0)

Line : 189
File : sessions.php