Not work files condition

[posquit0]

labeler.yml

version: 1
labels:
- label: "env/dev"
  files:
  - "clusters/dev/.*"
- label: "env/staging"
  files:
  - "clusters/staging/.*"
- label: "env/prod"
  files:
  - "clusters/prod/.*"
- label: "infra/observability-platform"
  files:
  - "clusters/dev/observability/.*"
  - "clusters/staging/observability/.*"
  - "clusters/prod/observability/.*"

Problem

When I changed clusters/dev/observability/test.yaml in PR, the action does not add env/dev and infra/observability-platform labels.

I think getPrFileNames function is broken.

Logs

2020/10/15 17:37:50 Trigger event: pull_request
2020/10/15 17:37:50 env/dev: condition Title matches regex skipped (title is not set in config)
2020/10/15 17:37:50 env/dev: condition Branch matches regex skipped (branch is not set in config)
2020/10/15 17:37:50 env/dev: condition Pull Request is mergeable skipped (mergeable is not set in config)
2020/10/15 17:37:50 env/dev: condition Pull Request contains a number of changes skipped (size-above and size-below are not set in config)
2020/10/15 17:37:50 Matching `clusters/dev/.*` against: 
2020/10/15 17:37:50 env/dev: condition File matches regex yields false
2020/10/15 17:37:50 env/staging: condition Title matches regex skipped (title is not set in config)
2020/10/15 17:37:50 env/staging: condition Branch matches regex skipped (branch is not set in config)
2020/10/15 17:37:50 env/staging: condition Pull Request is mergeable skipped (mergeable is not set in config)
2020/10/15 17:37:50 env/staging: condition Pull Request contains a number of changes skipped (size-above and size-below are not set in config)
2020/10/15 17:37:50 Matching `clusters/staging/.*` against: 
2020/10/15 17:37:50 env/staging: condition File matches regex yields false
2020/10/15 17:37:50 env/prod: condition Title matches regex skipped (title is not set in config)
2020/10/15 17:37:50 env/prod: condition Branch matches regex skipped (branch is not set in config)
2020/10/15 17:37:50 env/prod: condition Pull Request is mergeable skipped (mergeable is not set in config)
2020/10/15 17:37:50 env/prod: condition Pull Request contains a number of changes skipped (size-above and size-below are not set in config)
2020/10/15 17:37:50 Matching `clusters/prod/.*` against: 
2020/10/15 17:37:50 env/prod: condition File matches regex yields false
2020/10/15 17:37:50 infra/observability-platform: condition Title matches regex skipped (title is not set in config)
2020/10/15 17:37:50 infra/observability-platform: condition Branch matches regex skipped (branch is not set in config)
2020/10/15 17:37:50 infra/observability-platform: condition Pull Request is mergeable skipped (mergeable is not set in config)
2020/10/15 17:37:50 infra/observability-platform: condition Pull Request contains a number of changes skipped (size-above and size-below are not set in config)
2020/10/15 17:37:50 Matching `clusters/dev/observability/.*, clusters/staging/observability/.*, clusters/prod/observability/.*` against: 
2020/10/15 17:37:50 infra/observability-platform: condition File matches regex yields false
2020/10/15 17:37:51 Desired labels: []