Custom translator XLIFF training document upload error: Failed to extract the contents of the uploaded file.
When trying to upload training documents in format XLIFF (2.0 or 1.2) at portal.customtranslator.azure.ai the uploads always fail with "Failed to extract the contents of the uploaded file." I don't get any indication of failure on upload page, but can see this error in upload history.
Example of xliff file:
<xliff xmlns="urn:oasis:names:tc:xliff:document:2.0" version="2.0" srcLang="en-US" trgLang="nb-NO">
<file id="f1" original="Simple_Example.html">
<skeleton href="Simple_Example.html.skl"/>
<unit id="1">
<segment>
<source>Hello world</source>
<target>Hei verden</target>
</segment>
</unit>
<unit id="2">
<segment>
<source>This is an XLIFF document.</source>
<target>Dette er ett XLIFF dokument.</target>
</segment>
</unit>
</file>
</xliff>