Describe the bug
Unexpected end of JSON input

To Reproduce
Steps to reproduce the behavior:

1. Create a PR to a project
   https://github.com/AlexRogalskiy/java-patterns/actions/runs/2903651345/workflow
   https://github.com/AlexRogalskiy/java-patterns/runs/7951029716?check_suite_focus=true

Run cla-assistant/[email protected]
  with:
    path-to-signatures: cla/signatures.json
    path-to-document: https://github.com/AlexRogalskiy/java-patterns/blob/master/cla/README.md
    branch: master
    allowlist: imgbot,dependabot*
    use-dco-flag: false
    lock-pullrequest-aftermerge: true
  env:
    GITHUB_TOKEN: ***
    PERSONAL_ACCESS_TOKEN: ***
CLA Assistant GitHub Action bot has started the process
Error: Unexpected end of JSON input

Expected behavior
Error messages should be easily understood by humans, not just underlying technical details. They should be specific, so if a certain file is malformed, the name of the file should be indicated.

Note: if your software can know it's an alpha/beta and can know that there's a released version available for the same (or newer), then it might make sense to warn and suggest updating (I haven't done this yet for my own software, but it came up this weekend, so I'm considering it).

Screenshots
If applicable, add screenshots to help explain your problem.