chore: Undo `Error` for `SetterResult` #213

Job	Run time
Format	7s
Clippy	16s
Check & Test (windows-latest)	1m 0s
Check & Test (ubuntu-latest)	34s
Check & Test (macos-latest)	26s
Check & Test (ubuntu-latest, wasm32-wasi, /home/runner/.wasmtime/bin/wasmtime --dir=.)	36s
	2m 59s

Provide feedback