Possibly a conflict error. Trying to skip possible conflict files.

Error: The process '/usr/bin/git' failed with exit code 128

Unexpected input(s) 'installation_id', valid inputs are ['app_id', 'github_api_url', 'installation_retrieval_mode', 'installation_retrieval_payload', 'permissions', 'private_key', 'repositories', 'revoke']

Unexpected input(s) 'installation_id', valid inputs are ['app_id', 'github_api_url', 'installation_retrieval_mode', 'installation_retrieval_payload', 'permissions', 'private_key', 'repositories', 'revoke']

Unexpected input(s) 'branch_name', valid inputs are ['body_template', 'files_to_skip', 'github_token', 'head_template', 'label_pattern', 'labels_template', 'title_template', 'failure_labels']

Your repository allows merge commits and rebase merging. However, Backport only supports rebased and merged pull requests with a single commit and squashed and merged pull requests. Consider only allowing squash merging. See https://help.github.com/en/github/administering-a-repository/about-merge-methods-on-github for more information.