My application was working perfectly fine, then I started integrating SDK for push notification and stop the integration in between. I even deleted the SDK from my project a
In my case, I executed my application after some updates, then tried to commit it on git, and conflicts ruined my code. That was sad story.
But luckily I had one backup on my system and I replaced ruined code with my local code.
Now while executing I felt same problem. Then cleaning the project was the magical stick for me. I cleaned the project and I was good to go.