I had this issue with a deploy of a spring boot application on weblogic 12c server. The problem is that when I try to deploy this application on my local weblogic server it works fine, but when I deploy the same application (EAR) on pre-prod server, it doesn't.
The weblogic error is: java.io.IOException weblogic.utils.compiler.ToolFailureException
WebApplicationInitializeras per documentation?SpringBootServletInitializer