diff --git a/build.gradle b/build.gradle
index ef1105f..9680442 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
 
 java {
     group = 'eu.openaire.urls_controller'
-    version = '2.7.0-SNAPSHOT'
+    version = '2.6.3-SNAPSHOT'
     sourceCompatibility = JavaVersion.VERSION_1_8
 }
 
diff --git a/src/main/java/eu/openaire/urls_controller/services/UrlsServiceImpl.java b/src/main/java/eu/openaire/urls_controller/services/UrlsServiceImpl.java
index 48106cc..82f023b 100644
--- a/src/main/java/eu/openaire/urls_controller/services/UrlsServiceImpl.java
+++ b/src/main/java/eu/openaire/urls_controller/services/UrlsServiceImpl.java
@@ -68,7 +68,7 @@ public class UrlsServiceImpl implements UrlsService {
     private static String excludedDatasourceIDsStringList = null;
 
 
-    private static final String DOC_URL_FILTER = ".+(pdf|download|/doc|document|(?:/|[?]|&)file|/fulltext|attachment|/paper|viewfile|viewdoc|/get|cgi/viewcontent.cgi\\?|t[ée]l[ée]charger|descargar).*";
+    private static final String DOC_URL_FILTER = ".+(?:pdf|download|/doc|document|(?:/|[?]|&)file|/fulltext|attachment|/paper|viewfile|viewdoc|/get|cgi/viewcontent.cgi\\?|t[ée]l[ée]charger|descargar).*";
     // "DOC_URL_FILTER" works for lowerCase Strings (we use the "ignore-case" indicator in the "regexp_like()" method).
 
 
@@ -329,7 +329,7 @@ public class UrlsServiceImpl implements UrlsService {
 
         DatabaseConnector.databaseLock.lock();
         // Lock the DB here so the prefilled-Payloads which will be generated inside the "getTasksForCreatingAndUploadingParquetFiles()" method (using a dedicated query)
-        // will be synchronized with the insert of all attempt and payload records to the DB.
+        // will be synchronized with the insert of all attempt and payload records to the DB. This action is NOT a callable-task, so it runs during the execution of this method.
         // This is important in order to avoid having workers take these records as assignments, when we know that payloads are ready to be inserted for them.
 
         List<Callable<ParquetReport>> callableTasks = parquetFileUtils.getTasksForCreatingAndUploadingParquetFiles(urlReports, sizeOfUrlReports, curReportAssignmentsCounter, localParquetPath, uploadFullTextsResponse);
diff --git a/src/main/java/eu/openaire/urls_controller/util/FileUtils.java b/src/main/java/eu/openaire/urls_controller/util/FileUtils.java
index 416900b..da1b3fe 100644
--- a/src/main/java/eu/openaire/urls_controller/util/FileUtils.java
+++ b/src/main/java/eu/openaire/urls_controller/util/FileUtils.java
@@ -598,7 +598,7 @@ public class FileUtils {
         if ( filenameForS3 == null )    // The error is logged inside.
             return null;
 
-        String fileFullPath = targetDirectory + File.separator + fileName;   // The fullPath to the local file (which has the previous name).
+        String fileFullPath = targetDirectory + fileName;   // The fullPath to the local file (which has the previous name).
         String s3Url = null;
         try {
             s3Url = s3ObjectStore.uploadToS3(filenameForS3, fileFullPath);