InternalApiError TargetingIdeaService

[Springest]

Why developing something based on the TargetingIdeaService I'm getting
this Internal API error. Any clue on what's going wrong?

SOAP Log:
<?xml version="1.0"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/";>
  <soap:Header>
    <ResponseHeader xmlns:ns2="https://adwords.google.com/api/adwords/
cm/v201109" xmlns="https://adwords.google.com/api/adwords/o/v201109";>
      <ns2:requestId>0004b40d333bf3000ada7e4300002292</ns2:requestId>
      <ns2:operations>1</ns2:operations>
      <ns2:responseTime>107</ns2:responseTime>
      <ns2:units>6</ns2:units>
    </ResponseHeader>
  </soap:Header>
  <soap:Body>
    <soap:Fault>
      <faultcode>soap:Server</faultcode>
      <faultstring>[InternalApiError.UNEXPECTED_INTERNAL_API_ERROR @
com.google.ads.api.services.common.error.InternalApiError.&lt;init&gt;
(InternalApiErro]</faultstring>
      <detail>
        <ApiExceptionFault xmlns="https://adwords.google.com/api/
adwords/o/v201109" xmlns:ns2="https://adwords.google.com/api/adwords/
cm/v201109">
          <ns2:message>[InternalApiError.UNEXPECTED_INTERNAL_API_ERROR
@
com.google.ads.api.services.common.error.InternalApiError.&lt;init&gt;
(InternalApiErro]</ns2:message>
          <ns2:ApplicationException.Type>ApiException</
ns2:ApplicationException.Type>
          <ns2:errors xmlns:xsi="http://www.w3.org/2001/XMLSchema-
instance" xsi:type="ns2:InternalApiError">
            <ns2:fieldPath/>
            <ns2:trigger/>
 
<ns2:errorString>InternalApiError.UNEXPECTED_INTERNAL_API_ERROR</
ns2:errorString>
            <ns2:ApiError.Type>InternalApiError</ns2:ApiError.Type>
            <ns2:reason>UNEXPECTED_INTERNAL_API_ERROR</ns2:reason>
          </ns2:errors>
        </ApiExceptionFault>
      </detail>
    </soap:Fault>
  </soap:Body>
</soap:Envelope>

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