I am getting this error while pushing the code.

[sumitvajarinkar]

[smv1999]

CD to the repo folder and then execute the push command.

That is, you are inside Arrays folder now. Move back to CompetitiveProgrammingQuestionBank by executing :
cd ..
Then execute the push command.

[sumitvajarinkar]

I tried cd.. but again same error.

[smv1999]

Are you sure you cloned the forked repository ?

Also, you can find some information here.

[sumitvajarinkar]

Yes, I successfully did trapping rainwater but after that, I'm getting errors for others.
Now, I'm again doing from start fork -> clone -> and further process.

[sumitvajarinkar]

Same problem while pushing again.

[sumitvajarinkar]

I drag it in the forked repo and merged finally. ✌