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Is that webroot path from, the renewal configuration file still correct?
Let's Encrypt always validates on port 80 using the http-01 challenge, which is used by the webroot plugin. It's mandated to do so. You can't force the validation on port 8080. So Let's Encrypt tries to validate on your "other webserver", which probably is not the correct one where Certbot puts the challenge file.
actually i'm redirecting from the port 444 with xampp webserver to my old appserv with port 80..
all the web files located in the path D:\appserv\www, i've tried to change it and rerun the renewal and i got this error