The Execute Command Stopped Working...

The execute command doesn't work in 1.19.50 example:

( /execute @a ~~~ detect ~_-2 emerald_block 0 effect @s jump_boost 1 4 true )

expected resaults:

Gives any player who has a emerald block two blocks underneath them jump boost.

What Happens:
The execute command doesn't work.

• I had command blocks enabled. ( /gamerule commandblocksenabled true )

• I've been a command block creator for years so I know what I'm doing.

• My command block was on ( Repeat, Unconditional, Always Active ) so it should have worked.

• I tried to use the execute command in a newly created world too so it should have worked.

• This is an issue for creating things since slot of command block creations use the /execute command