app-schema java.lang.IllegalStateException: Subject type not loaded yet

As GeoServer only allows one FeatureType of same type per instance, in order to achieve more than one silimar type, a new schema been created to have the similar type with different element name:

1) Created a new schema under a new profiles directory
(profiles/Borehole.xsd)
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:gml="http://www.opengis.net/gml" xmlns:gsml="urn:cgi:xmlns:CGI:GeoSciML:2.0" xmlns:sa="http://www.opengis.net/sampling/1.0" xmlns:om="http://www.opengis.net/om/1.0" xmlns:xlink="http://www.w3.org/1999/xlink" targetNamespace="urn:cgi:xmlns:CGI:GeoSciML:2.0">
<annotation>
<documentation>Profile wrapper for Borehole</documentation>
</annotation>
<import namespace="http://www.opengis.net/gml" schemaLocation="http://schemas.opengis.net/gml/3.1.1/base/gml.xsd"/>
<import namespace="http://www.opengis.net/sampling/1.0" schemaLocation="http://schemas.opengis.net/sampling/1.0.0/sampling.xsd"/>
<include schemaLocation="http://www.geosciml.org/geosciml/2.0/xsd/geosciml.xsd"/>
<element name="BoreholeHeader" type="gsml:BoreholeType" substitutionGroup="sa:SamplingCurve"/>
</schema>

2) Have the geoserver config file pointing to the new schema file :
<targetTypes>
<FeatureType>
<schemaUri>../profiles/Borehole.xsd</schemaUri>
</FeatureType>
</targetTypes>

3) Running the config file will receive the following java exception :
<ows:ExceptionReport version="1.0.0" xsi:schemaLocation="http://www.opengis.net/ows http://localhost:8080/geoserver/schemas/ows/1.0.0/owsExceptionReport.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ows="http://www.opengis.net/ows">

• <ows:Exception exceptionCode="NoApplicableCode">
  <ows:ExceptionText>java.lang.IllegalStateException: Subject type not loaded yet Subject type not loaded yet</ows:ExceptionText>
  </ows:Exception>
  </ows:ExceptionReport>