Using openSUSE Leap 42.1, Gwenview version 15.08.3, KDE Frameworks 5.16.0, Qt 5.5.0
When opening  Gwenview with picture, after few seconds is shown message window "Request time on server expired <IP_ADDR>" 
IP_ADDR is defined numeric format and server was defined in dolphin. From ~/.local/share/user-places.xbel
 <bookmark href="smb://<domain>%5C<username>@<IP_ADDR>/">
  <title>TITLE</title>
  <info>
   <metadata owner="http://freedesktop.org">
    <bookmark:icon name="folder-remote"/>
   </metadata>
   <metadata owner="http://www.kde.org">
    <ID>1447646013/1 (V2)</ID>
    <IsHidden>false</IsHidden>
   </metadata>
  </info>
 </bookmark>

When opening Gwenview without picture, message window does not appear. Until now I did not opened pictures from that location. In ~/.local/share/user-places.xbel are defined also other SMB bookmarks, but only for defined one is message shown. After pressing OK button, Gwenview works normally.

Reproducible: Always

Steps to Reproduce:
1. Open Gwenview with image (from command line or from Dolphin)
2. Wait few seconds

Actual Results:  
Error message "Request time on server expired <IP_ADDR>" is coming

Expected Results:  
No error message is shown.