Central has not been updated to version 1.2

Welcome to the ODK forum, @Ros_Opros! We're glad you're here. When you get a chance, please introduce yourself on this forum thread. I'd also encourage you to add a picture as your avatar because it helps build community!

Did you follow exactly all of the steps listed in the documentation for Upgrading Central? There are additional commands after the git pull step:

Now, get the latest client and server: git submodule update -i. Then, build your server from the latest code you just fetched: docker-compose build.

Next, you need to do a little bit of maintenance. Run docker prune. If it thinks prune is not a docker command, run docker image prune instead. You'll be asked to confirm the removal of all dangling images. Agree by typing the letter y and pressing Enter.

Finally, restart the running server to pick up the changes: docker-compose stop and docker-compose up -d.