403 Access to command denied by ACL

i got 403 Access to command denied by ACL, while trying to run a script on Save&Apply button from frontend.
in script i try to download urls .
i have

"cgi-io": [
				"exec", "download", "backup" ]

in json file at /usr/share/rpcd/acl.d/

Any idea to solve this???
Thanks in Advance

Which specific command do you try to run, and how‘s the current code looking?

in script this command is running
wget --no-check-certificate -O "$output_file" "$url" >/dev/null 2>&1

but now, it does not show any error but script is also not running

What's the JavaScript code triggering the script?

thanks @jow for your reply, my issue is solved