diff --git a/src/main/java/org/gcube/datatransfer/resolver/geoportal/exporter/HTML_Page.java b/src/main/java/org/gcube/datatransfer/resolver/geoportal/exporter/HTML_Page.java
index f9ae4b5..3aeb464 100644
--- a/src/main/java/org/gcube/datatransfer/resolver/geoportal/exporter/HTML_Page.java
+++ b/src/main/java/org/gcube/datatransfer/resolver/geoportal/exporter/HTML_Page.java
@@ -13,7 +13,6 @@ public class HTML_Page {
 	public static String entityHTMLMessage(String action, String message, boolean waiting, String viewPdfURL) {
 
 		String newHTML = "<html>\n"
-				+ "\n"
 				+ "  <head>\n"
 				+ "    <meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\">\n"
 				+ "    <style>\n"
@@ -50,7 +49,7 @@ public class HTML_Page {
 				+ "      async function fetchPDF_URL() {\n"
 				+ "        try {\n"
 				+ "\n"
-				+ "          const response = await fetch("+viewPdfURL+");\n"
+				+ "          const response = await fetch('"+viewPdfURL+"');\n"
 				+ "          console.log(\"polling response\");\n"
 				+ "          return response.json();\n"
 				+ "        } catch (error) {\n"
@@ -58,8 +57,8 @@ public class HTML_Page {
 				+ "        }\n"
 				+ "      }\n"
 				+ "      async function playPDFPoll() {\n"
-				+ "        const response_object = await fetchPDF_URL();\n"
-				+ "        isJsonresponse = isJsonString(response_object);\n"
+				+ "        let response_object = await fetchPDF_URL();\n"
+				+ "        let isJsonResponse = isJsonString(response_object);\n"
 				+ "        if (isJsonResponse) {\n"
 				+ "          console.log(\"json response \" + response_object);\n"
 				+ "          if (!(response_object.url === null || response_object.url === undefined)) {\n"
