Support witness caulculating
refactor: replace anyhow to EigenError (#59) * refactor: replace anyhow to EigenError --------- Co-authored-by: ibmp33 <2285673866@qq.com>
refactor: replace anyhow to EigenError (#59) * refactor: replace anyhow to EigenError --------- Co-authored-by: ibmp33 <2285673866@qq.com>