bugfix: additional logs for debuggig

Author: andreishket

server/services/getPDF.php

@@ -21,11 +21,14 @@
 $images_path = $ini_array["general"]["images_path"];
 
 if (isServiceWithPDFList($service)) {
+    error_log('This is the service with multi pdf service');
     handleMultiPdfService($vis_id, $paper_id, $images_path, $filename, $is_streamgraph);
 } else {
+    error_log('This is the service with single url service');
     handleSingleUrlService($vis_id, $paper_id, $url, $images_path, $filename, $is_streamgraph);
 }
 
+error_log('Returning the filename:' . $filename);
 library\CommUtils::echoOrCallback(json_encode(array("status" => "success", "file" => $filename)), $_GET);
 
 function isServiceWithPDFList(string $service): bool {
@@ -145,6 +148,8 @@ function extractValidPdfUrls(array $revision_data, string $paper_id, bool $is_st
         }
     }
 
+    error_log('This is the valid urls:' . json_encode($valid_urls));
+
     return array_unique($valid_urls);
 }