do what > @backK said:
If you tried the appeal method and still failed, I suggest you use the same method as mine
Download https://github.com/byt3bl33d3r/CrackMapExec/blob/master/requirements.txt
Then install with pip3
If you guys getting the same error even after doing this ! Its the issue with impacket. Make sure you have the latest and try this command it worked for me 
pip3 install impacket --upgrade --user
Reference : Missing required parameter 'digestmod' · Issue #380 · byt3bl33d3r/CrackMapExec · GitHub