The level key in the response json rpc changed to level_info -> updating the key in the struct in the pull request https://github.com/goat-systems/go-tezos/blob/800cc714fad7313e92a5068407c23e0e397f5323/rpc/block.go#L106 Example of response with the new key:  #192
The level key in the response json rpc changed to level_info -> updating the key in the struct in the pull request
go-tezos/rpc/block.go
Line 106 in 800cc71
Example of response with the new key:
#192