Installation of insertInlineImage

[Sale2288]

How to install new version of insertInlineImage (v1.1) ?

I have forked this repository, went to Tools -> Add-Ons -> Install add-on from a known location and provided /home/Desktop/addons-master/insertInlineImage/InsertInlineImage.mm but I got error which says
Error in map structure: Expected exactly one child of ${name}.groovy but got 0.

Can I get some guidance to install this plugin on freeplane 1.8.2?

[lilive]

You are downloading the source file, not the add-on installation package. Get it at https://www.freeplane.org/wiki/index.php/Add-ons_(install)#Insert_Inline_Image
Usually, I think you've got more chances to have answers if you post into the forum.