I was creating a player counter and I did nothing incorrect but the command block is sending a signal. the command block must not do if it's out of range like example @a[c=16] and there's no other player except me. The target does is nearest 16 entities or player will get detected and if it didn't match the command block must not to send a redstone signal and gives an error instead.
I did the same on the older version at "1.14 to 1.15"" and the result is not the same as on 1.16.0.64.

Attachment:
https://drive.google.com/file/d/1o1Ycxr5bQcLGtn7OP0jdQPLYpjEqRu0I/view?usp=drivesdk

Can't sent attachment directly:
"Jira could not attach the file as there was a missing token. Please try attaching the file again."
even I tried to resent.