Unable to process template language expressions in action 'Convert_DOCX_to_PDF

Hi
I am using Logic App and a simple JSON

{
** “simple”: “Hello”**
}

Everything was working fine however suddenly getting error when converting docx to pdf (in last couple of hours)

InvalidTemplate. Unable to process template language expressions in action ‘Convert_DOCX_to_PDF’ inputs at line ‘1’ and column ‘1892’: ‘The template language function ‘base64’ expects its parameter to be a string, an object or an array. The provided value is of type ‘Null’. Please see https://aka.ms/logicexpressions#base64 for usage details.’.

Also, step above which creates docx from template is creating a blank document

Any help is appreciated

Regards

Hello @Abbas_Khan,

Could you please try to run the action now?
Yesterday there was a problem with our service.

Thanks, it started working at the end.