I too have dreaded this error - it means nothing to me and just pisses me off especially when developing webparts.
You can remove this by opening the web.config,
Search for <customErrors mode=“On“ /> and change it to <customErrors mode=“Off“ />
To see the call stack and trace information. Find
<SafeMode MaxControls=“200” CallStack=“false” DirectFileDependencies=“10” TotalFileDependencies=“50” AllowPageLevelTrace=“false“>
and change [...]