@@ -0,0 +1,180 @@
+package io.github.tommy1199.appconfigr;%0D%0A%0D%0Apublic class ConfigurationException extends RuntimeException %7B%0D%0A    ConfigurationException(String msg) %7B%0D%0A        super(msg);%0D%0A    %7D%0D%0A%7D%0D%0A

Add own exception.