# Machine Learning Extractor: Invalid Response: content=License 'validation'

**URL:** <https://forum.uipath.com/t/machine-learning-extractor-invalid-response-content-license-validation/320383>\
**Category:** AI Center\
**Tags:** question, mlservices, ai-center, activities\
**Created:** [June 4, 2021, 10:42am UTC](https://forum.uipath.com/t/machine-learning-extractor-invalid-response-content-license-validation/320383 "2021-06-04T10:42:10Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Julian\_Claessen](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/julian_claessen/32/315398_2.png) [@Julian\_Claessen](https://forum.uipath.com/u/Julian_Claessen)\
**Post date:** [June 4, 2021, 10:42am UTC](https://forum.uipath.com/t/machine-learning-extractor-invalid-response-content-license-validation/320383/1 "2021-06-04T10:42:10Z")

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I keep getting this error only when I add the ML Skill. For the normal endpoint it works. I am using the Enterprise Trial version.

“Data Extraction Scope: Invalid response: content=License ‘validation’ error: a connection error occured code=Unauthorized trace\_id=”

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**Author:** ![Julian\_Claessen](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/julian_claessen/32/315398_2.png) [@Julian\_Claessen](https://forum.uipath.com/u/Julian_Claessen)\
**Post date:** [June 5, 2021, 8:30am UTC](https://forum.uipath.com/t/machine-learning-extractor-invalid-response-content-license-validation/320383/2 "2021-06-05T08:30:35Z")

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I am using Google OCR, Any update?

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**Author:** ![sandler.chen](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/sandler.chen/32/176935_2.png) [@sandler.chen](https://forum.uipath.com/u/sandler.chen)\
**Post date:** [June 21, 2021, 7:14am UTC](https://forum.uipath.com/t/machine-learning-extractor-invalid-response-content-license-validation/320383/3 "2021-06-21T07:14:56Z")

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I have some issue as yours.