Hi,
It looks like an internal WordPress script is reporting an issue there, maybe the color picker, but I’m not sure based on the messages alone.
I suggest trying to maybe reset & deleting the plugin completely, then re-downloading it from codecanyon again (to make sure there the files are consistent), and doing a clean installation. I have tried to replicate the problem on multiple test servers, with fresh installations, but it all works. There are no other reports of this issue either, so I am not sure what exactly is the cause here.
In case the reset and complete re-installation does not work, and you have an online test server, where I can take a look at this, please let me know.