/execute @p [tag=Visitor] ~1 ~ ~ /say Test doesn't work in Command Blocks

Question

If I run this command normally it works: /execute @p [tag=Visitor] ~1 ~ ~ /say Test ... But if I try to run it in a command block it says: Syntax Error: Unexpected "]": at "xecute @s[>>]<<"

Answer 1

The format that you used is the pre-1.13 command format. Instead of what you did, try this command:

/execute as @p[tag=Visitor] run /say Test

Answer 2

I would also suggest removing the / at the beginning if it is to be place into a command block, as I have run into errors where it doesn't like the /, and disregards the rest of the command.