What version of Pega Robotics are you using? What version of Windows are you using? You could be facing a known issue that has been fixed in the latest version of Robotics, so if you are not on the latest version, I suggest that you upgrade.
I am facing this issue as well. Using Ver 8.0.1089.0 on a Windows 10 machine. Already tried this "Tools -> Options -> Pega Robotics -> Studio Diagnostics -> Output Publisher -> Off" and still getting the error.
Please check the version of Windows 10 that you are using. We are aware of an issue with IE in Windows 10 version 1809. If you are using this version, please roll back your OS to an earlier version such as 1803 or 1709.
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