It appears that it is missing from the 2.3.0 branch as it is not in the https://github.com/EVA-3D/eva-main/tree/main/stls folder.
Not sure if this is intended but seeing the others are still there, including the bigger MGN15 version I think this is an oversight.
Describe the bug
I was looking at the X Endstop section https://main.eva-3d.page/addons/x_endstop/ and noticed that the link for the file is giving a 404: https://main.eva-3d.page/stls/top_endstop_plug_mgn12.stl
It appears that it is missing from the 2.3.0 branch as it is not in the https://github.com/EVA-3D/eva-main/tree/main/stls folder. Not sure if this is intended but seeing the others are still there, including the bigger MGN15 version I think this is an oversight.
You can still find it in the older 2.2.1 branch: https://github.com/EVA-3D/eva-main/blob/2.2.1/stls/top_endstop_plug_mgn12.stl (Not sure if that part was changed from 2.2.1 to 2.3.0