Cannot load configuration from filename
This is typically errors on idp.xml or shibboleth-idp's web.xml where
filename is referred without the usage of full URI syntax
Try to change it from
<whateverTag>filename</whateverTag>
to
<whateverTag>file:///filename</whateverTag>
This is because a number of
IdP's path processing is done through URI or URL objects (ref
ShibResource? class)
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