'How to add a custom wearable(clothing item to be precise) to my Decentraland project?

I'm a game programmer and fairly new to decentraland. I have setup a DCL smart wearable project that is running on my localhost and I want to add a t-shirt model into my DCL project, so that in can appear in the inventory/customization menu. When I run the project it doesn't load, it displays a message at the top "There's no Ethereum provider". I just want to do some basic wearables testing how can I do that? Thank you for any help.



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