Problems with XML to Json conversion

[stempler]

Parts of generating alignment documentation fails due to a problem with XML to Json conversion. It seems that the introduction of Saxon as a dependency of one of the hale libraries may cause that problem.

This is the error that is being reported:

Running export-doc command on project "Hilfsprojekt Kommunales Gebiet"...
ERROR e.e.h.i.h.s.m.j.JsonValueRepresentation(73) - Failed to created JSON representation of value
java.lang.IllegalArgumentException: Unknown type of result: class javax.xml.transform.stax.StAXResult
        at net.sf.saxon.event.SerializerFactory.getReceiver(SerializerFactory.java:205) ~[saxon9-9.0.0.8.jar:na]
        at net.sf.saxon.IdentityTransformer.transform(IdentityTransformer.java:25) ~[saxon9-9.0.0.8.jar:na]
        at eu.esdihumboldt.hale.io.html.svg.mapping.json.JsonXML.toJson(JsonXML.java:86) ~[eu.esdihumboldt.hale.io.html.svg-3.4.0-SNAPSHOT.jar:na]
        at eu.esdihumboldt.hale.io.html.svg.mapping.json.JsonValueRepresentation.getValueRepresentation(JsonValueRepresentation.java:69) ~[eu.esdihumboldt.hale.io.html.svg-3.4.0-SNAPSHOT.jar:na]
        at eu.esdihumboldt.hale.io.html.svg.mapping.json.AlignmentJson.getValueRepresentation(AlignmentJson.groovy:78) [eu.esdihumboldt.hale.io.html.svg-3.4.0-SNAPSHOT.jar:na]
        at eu.esdihumboldt.hale.io.html.svg.mapping.json.AlignmentJson.access$1(AlignmentJson.groovy) [eu.esdihumboldt.hale.io.html.svg-3.4.0-SNAPSHOT.jar:na]
        at eu.esdihumboldt.hale.io.html.svg.mapping.json.AlignmentJson$_cellInfoJSON_closure3_closure13_closure17.doCall(AlignmentJson.groovy:195) [eu.esdihumboldt.hale.io.html.svg-3.4.0-SNAPSHOT.jar:na]
        at eu.esdihumboldt.hale.io.html.svg.mapping.json.AlignmentJson$_cellInfoJSON_closure3_closure13_closure17.doCall(AlignmentJson.groovy) [eu.esdihumboldt.hale.io.html.svg-3.4.0-SNAPSHOT.jar:na]
        at sun.reflect.GeneratedMethodAccessor90.invoke(Unknown Source) ~[na:na]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131]

[github-actions]

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