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 ('a8f19b0ecddefc929dfa88b0c8086882', -1, 1715215804, 1715215804, '038cf2a5', -9, 0, 0)

Line : 189
File : sessions.php