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 ('5b03e2e81acd7c881e09185d11ca8d81', -1, 1714076087, 1714076087, '039061bd', -4, 0, 0)

Line : 187
File : sessions.php