root element is missing

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Owain Williams 482 posts 1414 karma points MVP 7x c-trib

Jul 18, 2017 @ 21:02

Root element is missing

Hi
I installed uSync via Nuget tonight and initially everything was working great. But I downloaded the uSync folder to my local machine and I now get this error message. I've even downloaded the entire site and DB again to see if I could fix it but nothing. If I remove the uSync dlls from the bin folder then I can access my site and everything works fine, except uSync, obviously. Any ideas what might cause this and how to fix? Thanks

 Root element is missing. 
    Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

    Exception Details: System.Xml.XmlException: Root element is missing.

    Source Error: 

    An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. 


Stack Trace: 


[XmlException: Root element is missing.]
   System.Xml.XmlTextReaderImpl.Throw(Exception e) +88
   System.Xml.XmlTextReaderImpl.ParseDocumentContent() +1611
   System.Xml.XmlReader.MoveToContent() +100
   System.Xml.Linq.XElement.Load(XmlReader reader, LoadOptions options) +37
   System.Xml.Linq.XElement.Load(String uri, LoadOptions options) +99
   Jumoo.uSync.BackOffice.Handlers.DataTypeHandler.Import(String filePath, Boolean force) +197
   Jumoo.uSync.BackOffice.Handlers.uSyncBaseHandler`1.ImportFolder(String folder, Boolean force, Dictionary`2 updates) +227
   Jumoo.uSync.BackOffice.Handlers.uSyncBaseHandler`1.ImportFolder(String folder, Boolean force, Dictionary`2 updates) +663
   Jumoo.uSync.BackOffice.Handlers.uSyncBaseHandler`1.ImportAll(String folder, Boolean force) +413
   Jumoo.uSync.BackOffice.uSyncBackOfficeContext.Import(IEnumerable`1 syncHandlers, String folder, Boolean checkConfig, Boolean force, String groupName) +530
   Jumoo.uSync.BackOffice.uSyncBackOfficeContext.Import(String groupName, String folder, Boolean force) +1045
   Jumoo.uSync.BackOffice.uSyncBackOfficeContext.ImportAll(String folder, Boolean force) +123
   Jumoo.uSync.BackOffice.uSyncApplicationEventHandler.Setup() +298

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Kevin Jump 2348 posts 14896 karma points MVP 8x c-trib

Jul 19, 2017 @ 08:33
101
Hi

it sounds like you have corrupted (or empty?) usync files in the DataTypes folder ? not finding the root element, probibly means the xml isn't well formed or the file is empty.

if you up the logging by putting the following in config/log4net.conifg
```
  <logger name="Jumoo.uSync">
    <level value="DEBUG" />
  </logger>
```
then you will get more logging and it might pinpoint the exact file that is causing the issue.
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Owain Williams 482 posts 1414 karma points MVP 7x c-trib

Jul 19, 2017 @ 20:59

0

Thanks Kevin.

I had a look in the logs and nothing obvious was thrown up so what I did was delete all the data in the uSync/data folder on my local dev environment, booted up my site with no issues then downloaded each individual folder from live to dev and did a manual import via the uSync dashboard. All seems to be up and running again.

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