Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/e05ebd39bd85b6dda704b84c1d013f9dd1826ef5/third-party/MD_REncoder/examples/Polling You should set ROOT_URL correctly, otherwise the web may not work correctly.

Holger Wirtz 5335837f57 Exchanged Encoder library against one that has support for velocity/acceleration.		5 years ago
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Polling.ino	Exchanged Encoder library against one that has support for velocity/acceleration.	5 years ago