updated certpath section to check for FILE specifically

setup.sh

@@ -115,7 +115,7 @@ fi
 # not using Certbot: get location of certificate
 while true; do
     read -p "What is the path to your primary SSL certificate? " inputCertPath
-    case $inputCertPath in
+    case "${inputCertPath}" in
         '')
             echo -e "\n${err}You cannot have an empty path to your SSL certificate${norm}"
             ;;
@@ -125,11 +125,11 @@ while true; do
             ;;
         *)
             # validate path
-            if [ -s "${inputCertPath}" ]; then
+            if [ -f "${inputCertPath}" ]; then
                 CertPath="${inputCertPath}"
                 break
             else
-                echo -e "\n${warn}The file you specified doesn't exist or is empty"
+                echo -e "\n${warn}The file you specified doesn't exist"
                 while true; do
                     read -p "Do you want to use this path anyways? " yn
                     echo -e "${norm}"