phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('9b69f80675d62b0ac31b3245083deb79', -1, 1714036559, 1714036559, '038d1886', 4, 0, 0)

Line : 187
File : sessions.php