Fatal error: Uncaught Error: Class "Drupal\diff\FieldDiffBuilderBase" not found in /home/fnbrshareacopy/public_html/modules/contrib/entity_reference_revisions/src/Plugin/diff/Field/EntityReferenceRevisionsFieldDiffBuilder.php:27 Stack trace: #0 {main} thrown in /home/fnbrshareacopy/public_html/modules/contrib/entity_reference_revisions/src/Plugin/diff/Field/EntityReferenceRevisionsFieldDiffBuilder.php on line 27