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guideCKEditor 4 Error Code Reference

This feature was introduced in CKEditor 4.5.4. It is an editor core functionality which is included in all CKEditor 4 packages available from the Download site.

This article contains the list of CKEditor 4 error codes and their explanations. The error codes are used by the editor to log information about errors and warnings to the JavaScript console.

# autoembed-no-widget-def

  • Location: plugins/autoembed/plugin.js
  • Description: Incorrect autoEmbed_widget value. No widget definition found.
  • Additional data: None.

# cloudservices-no-token

  • Location: plugins/cloudservices/plugin.js
  • Description: The authentication token for the CKEditor Cloud Services plugin is empty. The cause of it might be that your token URL returned an empty response.
  • Additional data: None.

# cloudservices-no-token-url

# cloudservices-no-upload-url

# editor-destroy-iframe

  • Location: plugins/wysiwygarea/plugin.js
  • Description: The editor’s <iframe> could not be destroyed correctly because it had been unloaded before the editor was destroyed. Make sure to destroy the editor before detaching it from the DOM.
  • Additional data: None.

# editor-element-conflict

  • Location: core/editor.js
  • Description: There is already an editor’s instance attached to the provided element and attaching another one to it is not allowed.
  • Additional data:
    • editorName: The name of the already attached editor.

# editor-incorrect-destroy

  • Location: core/editor.js
  • Description: The editor is being destroyed before it is fully initialized.
  • Additional data: None.

# editor-incorrect-element

  • Location: core/editor.js
  • Description: The requested element could not be found in the page’s DOM. Check if the passed argument points to the correct element.
  • Additional data:
    • element: The element’s id attribute.

# editor-plugin-conflict

  • Location: core/editor.js
  • Description: A plugin cannot be initialized because it is in conflict with another plugin.
  • Additional data:
    • plugin: The name of the plugin that cannot be initialized.
    • replacedWith: The name of the plugin which has been initialized instead of the conflicting one.

# editor-plugin-required

  • Location: core/editor.js
  • Description: A plugin cannot be removed from the plugins list because it is required by another plugin.
  • Additional data:
    • plugin: The name of the plugin that cannot be removed.
    • requiredBy: The name of the plugin whose requirements block the removal.

# embed-no-provider-url

  • Location: plugins/embed/plugin.js
  • Description: No embed provider URL configured. Since CKEditor 4.7.0 this value is empty by default.
  • Additional data: None.

# embedbase-widget-invalid

  • Location: plugins/embedbase/plugin.js
  • Description: A widget no longer belongs to the current editor’s widgets list and is no longer valid.
  • Additional data: None.

# exportpdf-no-token

  • Location: plugins/exportpdf/plugin.js
  • Description: The authentication token for the CKEditor Export to PDF plugin is empty. The cause of it might be that your token URL returned an empty response.
  • Additional data: None.

# exportpdf-no-token-url

# exportpdf-stylesheets-incaccessible

  • Location: plugins/exportpdf/plugin.js
  • Description: At least one of the stylesheets attached to the document was not fully loaded when exportPdf command was executed.
  • Additional data:
    • error: Detailed error message (determines if stylesheet is still loading or cannot be accessed).

# filetools-response-error

  • Location: plugins/filetools/plugin.js
  • Description: An error occurred when parsing the upload response. The text could not be parsed to JSON.
  • Additional data:
    • responseText: Upload response text.

# invalid-license-key

  • Location: Various plugins
  • Description: The plugin license key passed to the plugin is missing or invalid. Refer to the plugin documentation for more information.
  • Additional data:
    • plugin: The name of the plugin that threw the error.

# mathjax-no-config

# no-vendor-lib

  • Location: core/tools.js
  • Description: Unable to find the vendor library. Make sure that the vendor library is available at the given path.
  • Additional data:
    • path: A path to the vendor library.

# range-endcontainer

  • Location: core/dom/range.js
  • Description: The end container element is not a descendant of the root element.
  • Additional data:
    • endContainer
    • root

# range-startcontainer

  • Location: core/dom/range.js
  • Description: The start container element is not a descendant of the root element.
  • Additional data:
    • startContainer
    • root

# selection-fake-reset

  • Location: core/selection.js
  • Description: Incorrect selection instance resets the fake selection.
  • Additional data: None.

# selection-not-fake

  • Location: core/selection.js
  • Description: The selection is no longer fake.
  • Additional data: None.

# uploadfile-config

  • Location: plugins/uploadfile/plugin.js
  • Description: Upload URL for the Upload File feature was not defined. Refer to the Uploading Dropped or Pasted Files article for more information.
  • Additional data: None.

# uploadimage-config

  • Location: plugins/uploadimage/plugin.js
  • Description: An upload URL for the Upload Image feature was not defined. Refer to the Uploading Dropped or Pasted Files article for more information.
  • Additional data: None.