NFT market undefined [ OpenSea Clone tutorial ]

Im trying to follow the boilerplate tutorial and implement that onto the ethereum-boilerplate-NFT-Marketplace.
In the Marketplace page, i get this page:

Infact, when i reload the page, there are random instances where where the marketplace will load:

I dont get any errors and within the Network, i can see the NFTs:

Does anyone know what i missed?

I do get an error when i click on the Market button to reopen it:

pointing to: request.send(requestData)

Are you seeing this error when the collection says undefined?

Do you see any error message or response for this error in the network tab.