To my understanding the same file has to be in the server and in the client, when I put it in the server it wouldn't start.

Error loading class: com/epherical/shopvisualizer/client/ShopVisualizerClient (java.lang.RuntimeException: Cannot load class com.epherical.shopvisualizer.client.ShopVisualizerClient in environment type SERVER)

But the client loads fine.

It's a client side mod only, if you're wanting to make use of the mod you would install Gunpowder Signshop, and then the shop-visualizer can read the data from the shop and display an item.

which mc version and gunpowder signshop version?

MC: 1.17
Gunpowder Signshop: gunpowder-signshop-1.0.4+gunpowder.1.0.1.1.mc.1.17
Shop-Visualizer: shop-visualizer-fabric-1.0.1

I got Signshop installed in the server, and the visualizer installed in the client but its not showing anything

Server ingame:

Client log:
Loading Mods

• shop-visualizer@${version}

Client shows it loaded, and no errors, but unable to see anything above shops.

ok, I took a look and gunpowder changed their NBT data, so I'll have to add a renderer for the updated format.

9141e85 fixes it. I'll have it uploaded soon. also fixed the shop-visualizer@${version} so it should show the actual mod version now.