when i reuse a repository to create dev environment it errors

The option to create a new branch in a repository should not be greyed out, so it's possible that there is an issue with the repository or the tool you are using. Here are some things you can try to resolve the issue:

Ensure that you have the necessary permissions: Make sure that you have the necessary permissions to create a new branch in the repository. If you are not the owner or a collaborator of the repository, you may not have the necessary permissions.

Check the repository settings: Verify that the repository settings allow for the creation of new branches. If the option to create new branches is disabled, you will not be able to create a new branch.

Try a different tool or method: If you are using a specific tool or method to create the new branch, try using a different tool or method to see if the issue persists. For example, you can try using the command line interface instead of the graphical user interface.

Contact support: If none of the above solutions work, consider contacting the support team for the tool or service you are using to report the issue and seek assistance.

It's worth noting that sometimes there can be intermittent bugs or issues with software and services, so if you encounter an issue, it may be worth checking back at a later time to see if the issue has been resolved.

Thank you.