I am using docman for document handling.
I am not able to to edit the document.
They describe the error as
"The problem is with a plugin: NS FontAwesome Pro (Editor Button). The plugin must be adding JS using a Joomla event handler that's running late. Some DOCman views (forms) are self contained and will not handle back the response to Joomla. If the developer is adding scripts after rendering then these will not be available to DOCman. Scripts should be added before or pushed to the Joomla document while rendering the button."