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 ('8fa4040612c454fc158994bc97703cec', -1, 1715294815, 1715294815, '038df4c9', 3, 0, 0)

Line : 189
File : sessions.php