Whenever I try to create a PR I get

[Debug 28373s 194ms] GitHubRepository> Creating pull requests failed: HttpError: Validation Failed

right after I choose target branch

• Extension version: 0.8.0
• VSCode Version: 1.35.1 (1.35.1)
• OS: MacOS Mojave

Steps to Reproduce:

1. Install exetnsion
2. restart VScode
3. Create new branch
4. Attempt to create new PR by pressing + button
5. Leave master as target branch
6. Observe error message