Unable to Open Project Due to Missing TempTestSuite File

I am unable to open a Katalon project. It is complaining about a missing TempTestSuite class file.
Is there a file or folder I need to delete to be able to open the project?
Here is the error on the Bamboo build server:

org.eclipse.core.internal.dtree.ObjectNotFoundException: Tree element ‘/E%%Bamboo%xml-data%build-dir%143360001-162627588%Katalon Studio%ChaChing_Tests%Trying out Covisum Project.prj/bin/lib/TempTestSuite1579014032497.class’ not found.