Drupal check issues

drupal-check -ad web/modules/contrib/template_generator/
 2/2 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%

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  Line   src/Form/GenerateTemplateForm.php
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  25     \Drupal calls should be avoided in classes, use dependency injection instead
  95     \Drupal calls should be avoided in classes, use dependency injection instead
  97     \Drupal calls should be avoided in classes, use dependency injection instead
  110    \Drupal calls should be avoided in classes, use dependency injection instead
  111    \Drupal calls should be avoided in classes, use dependency injection instead
  118    \Drupal calls should be avoided in classes, use dependency injection instead
  144    \Drupal calls should be avoided in classes, use dependency injection instead
  167    \Drupal calls should be avoided in classes, use dependency injection instead
  167    \Drupal calls should be avoided in classes, use dependency injection instead
  209    \Drupal calls should be avoided in classes, use dependency injection instead
  253    \Drupal calls should be avoided in classes, use dependency injection instead
  262    \Drupal calls should be avoided in classes, use dependency injection instead
  274    Cannot use [] for reading.
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 [ERROR] Found 13 errors