Error: Opening Robot Framework log failed
The accepted answer works for me but is not persistent. To make it persistent, modify the file /etc/default/jenkins and after JAVA_ARGS line, add the following line:
JAVA_ARGS="$JAVA_ARGS -Dhudson.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' ;\""
Change will apply and be persistent after reboot
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 line tool that are available. I am getting below error,

Opening Robot Framework log failed

•          Verify that you have JavaScript enabled in your browser.
•          Make sure you are using a modern enough browser. Firefox 3.5, IE 8, or equivalent is required, newer browsers are recommended.
•          Check are there messages in your browser's JavaScript error log. Please report the problem if you suspect you have encountered a bug.
·      I am getting this error even though I have already enabled JavaScript in my browser.I am using Mozilla Firefox version 45.0.2 on mac. 
Can anyone please help me to solve this issue?