Version 4.0.16

Wed, Sep 29, 2021

Version 4.0.16

Released: September 29, 2021

Status: Stable



An issue that caused menus to reset and collapse at random was fixed.


On overload systems, document page image generation will reach the timeout value as display the placeholder icon for invalid images. The setting CONVERTER_IMAGE_GENERATION_MAX_RETRIES was backported from version 4.1 to allow changing the maximum retry value of the image generation tasks from a single location.

Celery's maximum retry value defaults to 3, which couple with the default retry delay of 5 seconds means an image generation task will stop retrying after 15 seconds. The new settings sets this values to a default of 7 for estimated maximum retry time of 35 seconds per image.

Automatic quoting was added to the remaining migration query parameters to ensure maximum compatibility with database managers.


The OCR indexing examples in the documentation were updated according to the document changes in version 4.0.

A new chapter was added outlining the step to create a development deployment. The Docker image build chapter was updated to reference this new chapter.

Instructions were added on how to use a PIP cache to speed up the Docker image build process.

The current user is now capture and applied to the event when changing the active version of a document.


An edge situation that could cause the system restart banner to be triggered when a user changed their default language or timezone was fixed.


  • Minor fixes merged from version 3.5.11.
  • Remove duplicated makefile targets.
  • Add keyword arguments to PIL methods.
  • Fix support link in the menu.


  • None

Backward incompatible changes

  • None

Issues closed