Server error on specific dates in mailing list archive url

Hello,

I've accidentally discovered that this url:
https://www.postgresql.org/list/pgsql-bugs/since/999912010000/
triggers an internal server error.

While https://www.postgresql.org/list/pgsql-bugs/since/000000000000/
returns just "Not Found",

And
https://www.postgresql.org/list/pgsql-bugs/since/000101010000/
https://www.postgresql.org/list/pgsql-hackers/since/000101010000/
return more or less expected information.

Best regards,
Alexander