DIR=/u01/app/tomcat/apache-tomcat-9.0.43/work
if [ $(ls -A $DIR) ]
then
        echo 'Folder is not empty'
else
        echo 'Folder is empty'
fi

works fine and the output is

Folder is not empty.

however if I try it for /temp it fails. throwing error

DIR=/u01/app/tomcat/apache-tomcat-9.0.43/temp
if [ $(ls -A $DIR) ]
then
        echo 'Folder is not empty'
else
        echo 'Folder is empty'
fi

[: too many arguments Folder is empty

why is the /temp is not working.? The [: too many arguments Folder is empty error occurs only when the folder is not empty