Fix a bug that caused crashes when filePathRoot didn't exist

Changelog.tid

@@ -13,6 +13,8 @@ title: $:/plugins/OokTech/Bob/Changelog
 * Fix language handling so Bob can actually use different translations
 * Turn off the save throttling in Bob because the core now has improved handling for the task queue so we don't have to work around it anymore.
 ** This could still be sped up significantly if we update chooseNextTask in Syncer.js so that it can handle dispatching multiple tasks at once. At the moment it looks like the problem is handling retrying after an error.
+* Start the process of adding multi-save ability to the syncadaptor
+* Fix a bug that caused the server to crash when the filePathRoot didn't exist
 
 !! Version 1.7.2 Puppies and Kittens
 

ControlPanel/FileServerSetup.tid

@@ -184,7 +184,7 @@ nothing.
 !! Media in the FilePathRoot <<helpButton $:/plugins/OokTech/Bob/AboutListMediaInFilePathRoot>>
 
 <$button>
-  Fetch list of media in the filePathRoot folder
+  Fetch list of media in the <$text text=filePathRoot/> folder
   <$action-websocketmessage
     type='listFiles'
     folder='/files'
@@ -222,6 +222,7 @@ nothing.
 >
   <$list
     filter='[enlist{$:/state/fileList/files!!list}]'
+    emptyMessage="//No Files to Show//"
   >
     <$button>
       <<currentTiddler>>

ServerSide.js

@@ -1055,7 +1055,7 @@ ServerSide.listFiles = function(data, cb) {
         fs.readdir(resolvedPath, function(err, items) {
           if(err || !items) {
             $tw.Bob.logger.error("Can't read files folder ", resolvedPath, " with error ", err, {level: 1});
-            cb(prefix, [], urlPath);
+            cb(prefix, [], urlPath, wikiName);
           } else {
             // filter the list to only include listed mimetypes.
             let filteredItems = items.filter(function(item) {