Invalid type error

[NorbertBodziony]

I have bitcoin node in cloud behind nginx proxy. v0.21
Curl does work normally

but when i try to call anything using rust client i get
Err(JsonRpc(Json(Error("invalid type: integer 2, expected struct Response", line: 1, column: 2))))
integer number changes based on RPC call that I do.

When i run node locally, rust client works but i don't see how can this be issue with proxy if curl call works just fine.