examples/src/bin/rtpfecserver.rs fails with "Unable to set the pipeline to the Playing state"
I am trying to get this example to run https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/blob/main/examples/src/bin/rtpfecserver.rs
It compiles fine, but when running it stops on this line: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/blob/main/examples/src/bin/rtpfecserver.rs#L172
With the error: "Unable to set the pipeline to the Playing state
"
The way I understand it, because of rusts strict error checking, this means that creation of all the elements, and linking them worked fine. How do I debug such an opaque error?
Note: I had to comment out this line to make the example run: https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/blob/main/examples/src/bin/rtpfecserver.rs#L154