fix: replace non-null assertions with explicit handling - #1171

fix: replace non-null assertions with explicit handling#1171

nanaf6203-bit merged 2 commits into

MettaChain:mainMettaChain/PropChain-BackEnd:mainfrom

shadrackmanfred:fix/1083-non-null-assertionsshadrackmanfred/PropChain-BackEnd:fix/1083-non-null-assertionsCopy head branch name to clipboard