XPC Connection error (SOLVED)

I solved the XPC Connection error on my Macbook as follows: Download the JavaUninstallTool (https://www.java.com/en/download/uninstalltool.jsp), and then the latest Java Version (https://www.java.com/en/download/), Use the Uninstall Tool first, then install Java. Should work for you too. Good luck and best wishes, A.