Unexpected error when --fix against yaml with legacy fact problem

[cbowman0]

Describe the Bug

When a YAML file has a legacy fact, passing --fix to puppet-lint produces an unexpected error.

Whoops! It looks like puppet-lint has encountered an error that it doesn't
know how to handle. Please open an issue at https://github.com/puppetlabs/puppet-lint
and paste the following output into the issue description.

puppet-lint version: 5.1.1
ruby version: 3.3.5-p100
platform: x86_64-linux
file path: test/hiera.yaml
file contents:

---
version: 5

sample_key: host.%{::domain}

error:

NoMethodError: undefined method `value' for nil
/usr/local/share/gems/gems/puppet-lint-5.1.1/lib/puppet-lint/plugins/legacy_facts/legacy_facts.rb:210:in `fix'
/usr/local/share/gems/gems/puppet-lint-5.1.1/lib/puppet-lint/checkplugin.rb:42:in `block in fix_problems'
/usr/local/share/gems/gems/puppet-lint-5.1.1/lib/puppet-lint/checkplugin.rb:38:in `each'
/usr/local/share/gems/gems/puppet-lint-5.1.1/lib/puppet-lint/checkplugin.rb:38:in `fix_problems'
/usr/local/share/gems/gems/puppet-lint-5.1.1/lib/puppet-lint/checks.rb:80:in `block in run'
/usr/local/share/gems/gems/puppet-lint-5.1.1/lib/puppet-lint/checks.rb:78:in `each'
/usr/local/share/gems/gems/puppet-lint-5.1.1/lib/puppet-lint/checks.rb:78:in `run'
/usr/local/share/gems/gems/puppet-lint-5.1.1/lib/puppet-lint.rb:225:in `run'
/usr/local/share/gems/gems/puppet-lint-5.1.1/lib/puppet-lint/bin.rb:88:in `block in run'
/usr/local/share/gems/gems/puppet-lint-5.1.1/lib/puppet-lint/bin.rb:83:in `each'
/usr/local/share/gems/gems/puppet-lint-5.1.1/lib/puppet-lint/bin.rb:83:in `run'
/usr/local/share/gems/gems/puppet-lint-5.1.1/bin/puppet-lint:7:in `<top (required)>'
/usr/local/bin/puppet-lint:25:in `load'
/usr/local/bin/puppet-lint:25:in `<main>'

Expected Behavior

Do not throw an error.

Steps to Reproduce

1. Have a module with a hiera.yaml file that contains a legacy fact.
2. Run puppet-lint --fix

Test files I was using:
test/hiera.yaml
test/files/sample.yaml
test/manifests/init.pp

hiera.yaml:

---
version: 5

sample_key: host.%{::domain}

init.pp:

# Class: test
#
class test {

  $foo = 'bar'

  $baz = 'test'

}

sample.yaml:

# This is a sample YAML file demonstrating common features

# Key-value pairs (mappings)
name: John Doe
age: 30
isStudent: false

# Lists (sequences)
hobbies:
  - Reading
  - Hiking
  - Coding

# Nested structures
address:
  street: 123 Main St
  city: Anytown
  zipCode: "12345" # String value

Environment

Version 5.1.1
Platform Rocky 9.5