I have already synced sp-io in all of the cargo.toml to same file and also tried cargo clean and deleting cargo.lock but still getting the same error. Can someone please help me.
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Please provide enough code so others can better understand or reproduce the problem. – Community Nov 15 '21 at 13:21
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This error means that you are leaking the standard library twice somewhere in a dependency. This usually translates to: for some pallet x, where pallet x has feature std, you have forgotten to add x/std somewhere.
Recall that all FRAME crates need to be imported with default-features = false, and their std feature enabled in the top crate's std.
kianenigma
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All crates are imported with default-features = false, except the ones in dev-dependencies and also i didn't get what you mean by "their std feature enabled in the top crate's std" – Shubham Gupta Nov 10 '21 at 09:59