Hi @sonuk85184451
It's been a while since I went through the whole tutorial, but if the package isn't present, can't you just create it?
I can see the package in the AEM WKND GitHub project: https://github.com/adobe/aem-guides-wknd/tree/master/core/src/main/java/com/adobe/aem/guides/wknd/co... on the master branch, so maybe you missed a step earlier on?
If you ever get lost or de-synchronised with the tutorial as you go along, you can always reset your local project before you start each step of the tuorial by pulling from the repo branch that corresponds to the step of the tutorial you're on. For example, for you it would be this:
You can always view the finished code on GitHub or check the code out locally by switching to the branch custom-component/start
I can see the package is present on that branch too so you should have everything you need: https://github.com/adobe/aem-guides-wknd/tree/custom-component/start/core/src/main/java/com/adobe/ae...
