How to fix a bullet error?

Question

git

Good afternoon. I'm a complete lamer in the git, so please explain to me what's wrong? Already tired of googling.
I want to pull changes, I write: git pull
I get the following

C:\OpenServer\domains\lmlab2.local>git pull
error: You have not concluded your merge (MERGE_HEAD exists).
hint: Please commit your changes before merging.
fatal: Exiting because of unfinished merge.

They say you need to commit changes before the merge. But how to do it?

Answer 1

git add .
git commit -m "my message"

Answer 2

git merge --abort