Error: Opening Robot Framework log failed on mac jenkins

For resolve your problem you must :

1. Connect on your jenkins url (http://[IP]:8080/)
2. Click on Manage Jenkins from left side panel.
3. Click on Script Console

4. 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' ;")

5. Click on Run button.

6. Execute your Jenkins build.