I added a Web Part to my site home page which causes an exception

How do I remove it?

Since you need to view the page to edit it and delete the web part it's tricky when you add a web part to your page that causes an exception every time it's loaded. Here's two simple options:

1) retract the solution in Visual Studio

2) use the ?Contents=1 parameter on the web page to see the list of web parts without loading them. for example: https://intranet.contoso.com/SitePages/Home.aspx?Contents=1

Then fix your error or at least add exception handling