🇮🇳India @harishh

@fathima.asmat: Please remove .gitignore file.

@Rushikesh Raval: Remove unwanted empty function from the marvelous.theme file

/**
 * Marvelous settings form submit.
 */
function marvelous_settings_form_submit(&$form, FormStateInterface $form_state) {
  // $account = \Drupal::currentUser();
  // $values = $form_state->getValues();
}

@Mattixonix: Please fix the following.

Use $this->t() instead of t()

src/Entity/Building/Building.php

src/Entity/Estate/Estate.php

src/Entity/Flat/Flat.php

src/Entity/Floor/Floor.php

/** @var array $fields */
    $fields['uid']
      ->setLabel($this->t('Author'))
      ->setDescription($this->t('The Name of the associated user.'))
      ->setSetting('handler', 'default')
      ->setRevisionable(TRUE)
      ->setDisplayOptions('view', [
        'label' => 'above',
        'type' => 'entity_reference_label',
        'region' => 'hidden',
      ])

Add hook_help() for the following module files

modules/demo/re_mgr_demo.module

modules/presentation/re_mgr_presentation.module

modules/visualization/re_mgr_visualization.module

No issues found. Moving to RTBC