If I open any .html file that generated by Robot Framework and try to convert it in any other format(for example, docx formate) using either any python code or inbuilt command l
Answer is explained at Jenkins issue tracking system: https://issues.jenkins-ci.org/browse/JENKINS-32118
For resolve your problem you must :
Copy this into the field
System.setProperty("hudson.model.DirectoryBrowserSupport.CSP","sandbox allow-scripts; default-src 'none'; img-src 'self' data: ; style-src 'self' 'unsafe-inline' data: ; script-src 'self' 'unsafe-inline' 'unsafe-eval' ;")
Click on Run button.
Execute your Jenkins build.