fixes

src/main/java/stirling/software/SPDF/service/CustomPDDocumentFactory.java

@@ -44,14 +44,14 @@ public class CustomPDDocumentFactory {
         return createNewBytesBasedOnOldDocument(document);
     }
 
+
     public byte[] createNewBytesBasedOnOldDocument(PDDocument oldDocument) throws IOException {
-        PDDocument document = new PDDocument();
         pdfMetadataService.setMetadataToPdf(
-                document, pdfMetadataService.extractMetadataFromPdf(oldDocument), true);
+        		oldDocument, pdfMetadataService.extractMetadataFromPdf(oldDocument), true);
 
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
-        document.save(baos);
-        document.close();
+        oldDocument.save(baos);
+        oldDocument.close();
         return baos.toByteArray();
     }
 

src/main/java/stirling/software/SPDF/utils/CustomHtmlSanitizer.java

@@ -15,6 +15,7 @@ public class CustomHtmlSanitizer {
                     .and(new HtmlPolicyBuilder().disallowElements("noscript").toFactory());
 
     public static String sanitize(String html) {
-        return POLICY.sanitize(html);
+        String htmlAfter = POLICY.sanitize(html);
+        return htmlAfter;
     }
 }

src/main/java/stirling/software/SPDF/utils/FileToPdf.java

@@ -54,7 +54,9 @@ public class FileToPdf {
             List<String> command = new ArrayList<>();
             if (!htmlFormatsInstalled) {
                 command.add("weasyprint");
-                command.add("-e utf-8");
+                command.add("-e");
+                command.add("utf-8");
+                command.add("-v");
                 command.add(tempInputFile.toString());
                 command.add(tempOutputFile.toString());
             } else {