Whay .httaccess not working?

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Hi
i use wordpress last version in my website
i want to use .htaccess to replace %20 with space in page url , with this code

RewriteEngine On
RewriteRule ^(.*)\%20(.*)$ /$1 $2 [R=301,L]

but i’dont get any effect, Even when I restarted Litespeed it did not work