`InvalidPathException` is logged when attempting to generate a document link for a url in catalogs

[datho7561]

System: win10 with AdoptOpenJDK 11, couldn't reproduce under Linux

example catalog to reproduce:

<catalog
  xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="urn:oasis:names:tc:entity:xmlns:xml:catalog
    http://www.oasis-open.org/committees/entity/release/1.1/catalog.xsd"
  prefer="public">
  <public publicId="value" uri="https://google.ca" />
</catalog>