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TeachingHub.md

 # Teaching Hub @ IMGW
 
-<img src="https://jupyter.org/assets/hublogo.svg" width="300px">
+<img src="Documentation/jupyterhub-logo.svg" width="300px">
 
 - Address: [Teaching Hub](https://srvx1.img.univie.ac.at)
 - Access to the Teaching Hub can be done only via a browser.