Flat tire

How do I fix a flat tire with all that complicated stuff around the wheels?
There’s generally no need to remove the wheel to repair a flat tire:

Set the Cargobike on its Stabilo parking stand.

Try to find the source of puncture and set it in an accessible spot.

Open the tire from the left (non-drivetrain) side.

Pump a little air into the inner tube to locate the puncture(s).

Remove (all of) the offending objects and remaining air.

Patch the inner tube.

Refit left tire bead onto rim, making sure valve sits straight.

Pump tire up and continue cycling.