Your extension is a NFT/Crypto extension?
see https://dev.twitch.tv/docs/extensions/guidelines-and-policies
4.11 Extensions may not display, implement, include, or interact with any non-fungible token (NFT). Examples: Extensions may not include off-site links or referral codes to NFT sites and may not facilitate the creation, listing, trading, or redemption of NFTs.
This is a generic error in console not the raw response in network tools.