diff -u b/core/modules/quickedit/js/quickedit.es6.js b/core/modules/quickedit/js/quickedit.es6.js
--- b/core/modules/quickedit/js/quickedit.es6.js
+++ b/core/modules/quickedit/js/quickedit.es6.js
@@ -364,7 +364,7 @@
     // If there are no elements returned from `entityElementSelector`
     // throw an error. Check the browser console for this message.
     if (!$entityElement.length) {
-      throw new Error(`Quick Edit could not associate the rendered entity field markup (with [data-quickedit-field-id="${fieldID}"]) with the corresponding rendered entity markup: no parent DOM node found with [data-quickedit-entity-id="${entityID}"]. This is typically caused by the theme's template for this entity type forgetting to print the attributes.`);
+      throw `Quick Edit could not associate the rendered entity field markup (with [data-quickedit-field-id="${fieldID}"]) with the corresponding rendered entity markup: no parent DOM node found with [data-quickedit-entity-id="${entityID}"]. This is typically caused by the theme's template for this entity type forgetting to print the attributes.`;
     }
     let entityElement = $(fieldElement).closest($entityElement);
 
diff -u b/core/modules/quickedit/js/quickedit.js b/core/modules/quickedit/js/quickedit.js
--- b/core/modules/quickedit/js/quickedit.js
+++ b/core/modules/quickedit/js/quickedit.js
@@ -162,7 +162,7 @@
     var $entityElement = $(fieldElement).closest(entityElementSelector);
 
     if (!$entityElement.length) {
-      throw new Error('Quick Edit could not associate the rendered entity field markup (with [data-quickedit-field-id="' + fieldID + '"]) with the corresponding rendered entity markup: no parent DOM node found with [data-quickedit-entity-id="' + entityID + '"]. This is typically caused by the theme\'s template for this entity type forgetting to print the attributes.');
+      throw 'Quick Edit could not associate the rendered entity field markup (with [data-quickedit-field-id="' + fieldID + '"]) with the corresponding rendered entity markup: no parent DOM node found with [data-quickedit-entity-id="' + entityID + '"]. This is typically caused by the theme\'s template for this entity type forgetting to print the attributes.';
     }
     var entityElement = $(fieldElement).closest($entityElement);