intellij tomcat default startup script

if I selected “Use default” checkbox, application was deployed successfuly

under "C:\...\IntelliJIdea2016.2\system\tomcat\Unnamed_servlethelloworld_2\conf\Catalina\localhost", a xml file was generated by intellij

but when I didn't select "Use default" checkbox, application deployed failed, there was nothing under "C:\...\IntelliJIdea2016.2\system\tomcat\Unnamed_servlethelloworld_2\conf\Catalina\localhost"