Adding Report Graph to Dashboard

Your software
My Mautic version is: 2.16.2
My PHP version is: 7.2

Your problem
My problem is:
When I try and add a report graph to the dashboard I get the Oh Snap! message

However I can confirm that the report graph is working as I see it in the Report itself:

I saw there was a GitHub post on this that says it has been fixed.

These errors are showing in the log: NONE

Steps I have tried to fix the problem: Not much, write on the forum… thought of writing on slack channel

Did you ever find a solution? I am having the exact same problem. My Mautic version is 3.2 (I believe) and PHP 7.3