Adapt Learning Community: Missing imsmanifest.xml

I am exporting a course (spoor is installed) and uploading it to Moodle 3.6, and I receive this error:

Incorrect file package - missing imsmanifest.xml or AICC structure

I have also tried to build the course using grunt build but the same message is displayed. I can't find the imsmanifest.xml in the build package.

Any idea what might be causing this issue? I am not a developer :s

spoor is installed

You also need to make sure you have enabled it for that course (under manage extensions) and have configured it (configuration settings > extensions > spoor).