`Rails/StrongParametersExpect` errors when `permit` does not have parameters

[tagliala]

Dependabot tried to update rubocop-rails and I've notice this error

An error occurred while Rails/StrongParametersExpect cop was inspecting ~/myapp/controllers/test_controller.rb:5:4.

I've also checked the main branch

---

Expected behavior

Do not raise an error

Actual behavior

Raises an error

Steps to reproduce the problem

create a file under app/controllers/test.rb

# frozen_string_literal: true

class TargetsController < ApplicationController
  def target_params
    params.require(:target).permit
  end
end

rubocop -d app/controllers/test_controller.rb 

RuboCop version

Mention the following information in the issue report:
1.70.0 (using Parser 3.3.7.0, rubocop-ast 1.37.0, analyzing as Ruby 2.7, running on ruby 3.3.6) [x86_64-darwin24]

1.70.0 (using Parser 3.3.7.0, rubocop-ast 1.37.0, analyzing as Ruby 3.3, running on ruby 3.3.6) [x86_64-darwin24]
  - rubocop-capybara 2.21.0
  - rubocop-factory_bot 2.26.1
  - rubocop-performance 1.23.1
  - rubocop-rails 2.29.0 (from main branch)
  - rubocop-rspec 3.3.0
  - rubocop-rspec_rails 2.30.0

Log

rubocop -d app/controllers/test_controller.rb 
For ~/myapp: configuration from ~/myapp/.rubocop.yml
configuration from ~/.rvm/gems/ruby-3.3.6/gems/rubocop-capybara-2.21.0/config/default.yml
Default configuration from ~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/config/default.yml
configuration from ~/.rvm/gems/ruby-3.3.6/gems/rubocop-capybara-2.21.0/lib/../config/default.yml
configuration from ~/.rvm/gems/ruby-3.3.6/gems/rubocop-factory_bot-2.26.1/config/default.yml
configuration from ~/.rvm/gems/ruby-3.3.6/gems/rubocop-factory_bot-2.26.1/lib/../config/default.yml
configuration from ~/.rvm/gems/ruby-3.3.6/gems/rubocop-performance-1.23.1/config/default.yml
configuration from ~/.rvm/gems/ruby-3.3.6/gems/rubocop-performance-1.23.1/config/default.yml
configuration from ~/.rvm/gems/ruby-3.3.6/bundler/gems/rubocop-rails-e5dce3a0c27e/config/default.yml
configuration from ~/.rvm/gems/ruby-3.3.6/bundler/gems/rubocop-rails-e5dce3a0c27e/config/default.yml
configuration from ~/.rvm/gems/ruby-3.3.6/gems/rubocop-rspec-3.3.0/config/default.yml
configuration from ~/.rvm/gems/ruby-3.3.6/gems/rubocop-rspec-3.3.0/config/default.yml
configuration from ~/.rvm/gems/ruby-3.3.6/gems/rubocop-rspec_rails-2.30.0/config/default.yml
configuration from ~/.rvm/gems/ruby-3.3.6/gems/rubocop-rspec_rails-2.30.0/lib/../config/default.yml
Inheriting configuration from ~/myapp/.rubocop_todo.yml
Use parallel by default.
Skipping parallel inspection: only a single file needs inspection
Inspecting 1 file
Scanning ~/myapp/app/controllers/test_controller.rb
An error occurred while Rails/StrongParametersExpect cop was inspecting ~/myapp/app/controllers/test_controller.rb:5:4.
Expected a Parser::Source::Range, Comment or RuboCop::AST::Node, got NilClass
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/corrector.rb:111:in `to_range'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/corrector.rb:120:in `check_range_validity'
~/.rvm/gems/ruby-3.3.6/gems/parser-3.3.7.0/lib/parser/source/tree_rewriter.rb:398:in `combine'
~/.rvm/gems/ruby-3.3.6/gems/parser-3.3.7.0/lib/parser/source/tree_rewriter.rb:207:in `wrap'
~/.rvm/gems/ruby-3.3.6/gems/parser-3.3.7.0/lib/parser/source/tree_rewriter.rb:231:in `insert_before'
~/.rvm/gems/ruby-3.3.6/bundler/gems/rubocop-rails-e5dce3a0c27e/lib/rubocop/cop/rails/strong_parameters_expect.rb:65:in `block in on_send'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/base.rb:426:in `correct'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/base.rb:210:in `add_offense'
~/.rvm/gems/ruby-3.3.6/bundler/gems/rubocop-rails-e5dce3a0c27e/lib/rubocop/rails/migration_file_skippable.rb:29:in `add_offense'
~/.rvm/gems/ruby-3.3.6/bundler/gems/rubocop-rails-e5dce3a0c27e/lib/rubocop/cop/rails/strong_parameters_expect.rb:61:in `on_send'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/commissioner.rb:143:in `public_send'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/commissioner.rb:143:in `block (2 levels) in trigger_restricted_cops'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/commissioner.rb:171:in `with_cop_error_handling'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/commissioner.rb:142:in `block in trigger_restricted_cops'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/commissioner.rb:141:in `each'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/commissioner.rb:141:in `trigger_restricted_cops'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/commissioner.rb:70:in `on_send'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-ast-1.37.0/lib/rubocop/ast/traversal.rb:154:in `on_def'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/commissioner.rb:71:in `on_def'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-ast-1.37.0/lib/rubocop/ast/traversal.rb:154:in `on_class'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/commissioner.rb:71:in `on_class'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-ast-1.37.0/lib/rubocop/ast/traversal.rb:20:in `walk'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/commissioner.rb:87:in `investigate'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/team.rb:174:in `investigate_partial'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cop/team.rb:108:in `investigate'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:348:in `block in inspect_file'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:347:in `each'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:347:in `flat_map'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:347:in `inspect_file'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:290:in `block in do_inspection_loop'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:324:in `block in iterate_until_no_changes'
<internal:kernel>:187:in `loop'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:317:in `iterate_until_no_changes'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:286:in `do_inspection_loop'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:167:in `block in file_offenses'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:192:in `file_offense_cache'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:166:in `file_offenses'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:154:in `process_file'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:135:in `block in each_inspected_file'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:134:in `each'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:134:in `reduce'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:134:in `each_inspected_file'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:120:in `inspect_files'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/runner.rb:73:in `run'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cli/command/execute_runner.rb:26:in `block in execute_runner'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cli/command/execute_runner.rb:52:in `with_redirect'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cli/command/execute_runner.rb:25:in `execute_runner'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cli/command/execute_runner.rb:17:in `run'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cli/command.rb:11:in `run'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cli/environment.rb:18:in `run'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cli.rb:122:in `run_command'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cli.rb:129:in `execute_runners'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cli.rb:51:in `block in run'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cli.rb:81:in `profile_if_needed'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/lib/rubocop/cli.rb:43:in `run'
~/.rvm/gems/ruby-3.3.6/gems/rubocop-1.70.0/exe/rubocop:19:in `<top (required)>'
~/.rvm/gems/ruby-3.3.6/bin/rubocop:25:in `load'
~/.rvm/gems/ruby-3.3.6/bin/rubocop:25:in `<main>'
~/.rvm/gems/ruby-3.3.6/bin/ruby_executable_hooks:22:in `eval'
~/.rvm/gems/ruby-3.3.6/bin/ruby_executable_hooks:22:in `<main>'
.

1 file inspected, no offenses detected

1 error occurred:
An error occurred while Rails/StrongParametersExpect cop was inspecting ~/myapp/app/controllers/test_controller.rb:5:4.