You can either create your own 3D model or use the Report Error tool by right clicking on the Footprint in the library to report the missing 3D model. For information about how to make your own 3D model and assign it to a Footprint,  please refer to the Tutorial, (1) in (2) in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a)

Thanks @andyfierman, that answers my question. I will go with the reporting approach.