I also work with the Teamcenter Connector and this particular error is not related to the connector.
In Mendix Studio Pro attempt a CTRL + G and look for ‘Feedback’.
You might find a “FeedbackWidget_Template” in AtlasUI the feedback widget is loaded there. For some reason this is misfiring not Teamcenter.
You could also attempt CTRL + F but you’ll get more hits in your search results.
I would need more information to have a proper solution for this, however if you absolutely do not use this widget,
you could attempt to remove it (the widget inside the snippet) for a ‘ quickfix ‘