Fix directory parsing

scripts/upgrade

@@ -205,13 +205,16 @@ do
     # Backup 3rd party applications from the current nextcloud
     # But do not overwrite if there is any upgrade
     # (apps directory already exists in Nextcloud archive)
-    for nc_app_dir in "$(ls -1 "$final_path/apps")"
+    (
+		cd $final_path/apps
+    for nc_app_dir in */
     do
       if [ ! -d "$tmpdir/apps/$nc_app_dir" ]
       then
-            cp -a "$final_path/apps/$nc_app_dir" "$tmpdir/apps/$nc_app_dir"
+        cp -a "$nc_app_dir" "$tmpdir/apps/$nc_app_dir"
       fi
     done
+    )
 
     # Replace the old nextcloud by the new one
     ynh_secure_remove "$final_path"