adding alt tag to markers?

I am getting errors from my SEO checker (SEMRush) that the images for my page with the Easy2Map map in it do not have alt tags. This is not only for the out of the box images for the markers but also the custom marker images. Here is the image tag for one of the out-of-the-box pins:

<img src=”http://mydomain.com/wp-content/plugins/easy2map/images/map_pins/pins/111.png&#8221; onclick=”if (typeof easy2map_functions !== ‘undefined’) { easy2map_functions.displayPinItem(2)} else { easy2map_mappin_functions.displayPinItem(2)}” style=”cursor: pointer;”>

Is there a way to specify content for the alt tag?

https://wordpress.org/plugins/easy2map/