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# Function nemo_relay_last_error

> Retrieve the last error message set on this thread, or null if no error has occurred since the last `clear_last_error` call.

Generated from `cargo doc --no-deps -p nemo-relay -p nemo-relay-adaptive -p nemo-relay-ffi`.

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Retrieve the last error message set on this thread, or null if no error has occurred since the last [`clear_last_error`](/reference/api/rust-library-reference/nemo-relay-ffi/error/fn-clear-last-error) call.

The returned pointer borrows from thread-local storage and is valid only until the next FFI call on the same thread. Do **not** free the returned pointer.