Users are unable to edit fields; $rendererDescriptor.getEditVM(...) message is shown

Symptoms

When editing a field the following message is shown:

$rendererDescriptor.getEditVM($!description, $!issue.key, $!fieldLayoutItem.rendererType, $!field.id, $field.name, $rendererParams, false)

JEditor Renderer is missing from the list of field renderers in Field Configurations.

Cause

JEditor wasn't installed correctly. Sometimes UPM fails to install and activate all add-on modules. We are still investigating why this particular error is happening.

How to solve

Re-installing JEditor should solve this problem.

After re-installing check if the following module is enabled (if it's not, enable it manually):

• JEditor Renderer (com.jiraeditor.jeditor.renderer)