Something wierd with png

I am pretty new to phaser so maybe this is a noob question, but ran into something I can’t seem to find anything about. I am making a game using phaset3 and matter js. I’m making a block stacking game and I get mixed results with the images I’m using. Some png load, while others in the same folder don’t. I can’t figure out what would cause this. It’s not back breaking to my project, but I would like to understand why it’s happening for my edification. Thank you for your help in advance.