Reading instance throws if no facts

[dgm9704]

example instance:

<?xml version='1.0' encoding='utf-8'?>
<?taxonomy-version 2.0.3?>
<xbrli:xbrl xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink">
  <link:schemaRef xlink:type="simple" xlink:href="http://www.eba.europa.eu/eu/fr/xbrl/crr/fws/corep/its-2013-02/2014-07-31/mod/corep_con.xsd"/>
</xbrli:xbrl>

link to xsd: https://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd

excerpt:

<element name="xbrl">
<annotation>
<documentation>XBRL instance root element.</documentation>
</annotation>
<complexType>
<sequence>
<element ref="link:schemaRef" minOccurs="1" maxOccurs="unbounded"/>
<element ref="link:linkbaseRef" minOccurs="0" maxOccurs="unbounded"/>
<element ref="link:roleRef" minOccurs="0" maxOccurs="unbounded"/>
<element ref="link:arcroleRef" minOccurs="0" maxOccurs="unbounded"/>
<choice minOccurs="0" maxOccurs="unbounded">
<element ref="xbrli:item"/>
<element ref="xbrli:tuple"/>
<element ref="xbrli:context"/>
<element ref="xbrli:unit"/>
<element ref="link:footnoteLink"/>
</choice>
</sequence>
<attribute name="id" type="ID" use="optional"/>
<anyAttribute namespace="http://www.w3.org/XML/1998/namespace" processContents="lax"/>
</complexType>
</element>