Service could not be created. The service configuration file is invalid. No functions defined. There must be at least one '{http://wadl.dev.java.net/2009/02}method' or '{http://schemas.microsoft.com/MicrosoftProjectSiena/WADL/2014/11}function' element specified.
Session ID: b67f48fd-f0c1-4d3c-ab44-b129b7530f81
The above error is witnessed while connected a custom connector to a apps in power apps. what might be the reason?