Customer database contains concept definition with XREF and this leads to "GENERIC_APPLICATION_EXCEPTION"

Hello all,

when the term database in MultiTerm contains a concept with a concept definition including an XREF element, the server returns an response with error code 500 when calling http://server/multiterm/api/termbases/customer/concept/92

The definition looks like this:

<xref Clink="CLINK:101">Leitung</xref> zur Versorgung einer Steuerfunktion mit Fluiden


The server response looks like this:

{
  "errorCode": "GENERIC_APPLICATION_EXCEPTION",
  "message": "Something went a bit wrong, your administrator has more information on this."
}

For some reason other definitions with xref return results. For example:

aus mehr als einer Ader bestehende <xref Tlink="German:Leitung">Leitung</xref>, die zur Übertragung von Steuersignalen verwendet wird und immer eine Aktion auslöst


Anyone else experiencing this?