got this big error after a drupal upgrade to drupal 8.7:

Notice: Undefined index: width in Drupal\content_translation\Plugin\Validation\Constraint\ContentTranslationSynchronizedFieldsConstraintValidator->hasSynchronizedPropertyChanges() (line 153 of core/modules/content_translation/src/Plugin/Validation/Constraint/ContentTranslationSynchronizedFieldsConstraintValidator.php).

Solution

Add the following patch

"patches": {
    "drupal/core": {
        "Error after saving node drupal 8.7 issue": "https://www.drupal.org/files/issues/2019-02-11/ignore_width_height_on_untranslatable_field_comparision_2941092_8.patch"
    },
},