I could only get the plugin to activate by commenting out line 352, THEN activating. Once I did that, I could fill in the settings, but uncommenting the line resulted in the plug-in crashing again. I finally ended up hard-coding the API key:
#$options['headers']['Ocp-Apim-Subscription-Key'] = self::get_args()['api_key'];
$options['headers']['Ocp-Apim-Subscription-Key']="XXXXXXXXXXXXXXXXXXXXXXXXX";
This is obviously a problem for multiple sites unless I create copies of the plug-in.
Any assistance would be appreciated!
Thanks,
John