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 ('f6413b0b8deb4d747c8f5a13c0d222bf', -1, 1747880901, 1747880901, '0394f2ca', 1, 0, 0)

Line : 189
File : sessions.php