A4 with external effects - why became loud feedback?

hey! I just can’t do it, what’s going wrong here !? I go from the OT Cue to the Evebtide Space Pedal and from the Space to the A4 entrances. Here comes a very loud feedback, does anyone know what you can do here?

If you are sending (the a4 output?) via the ot to the effect and then back to a4, it sends the audio out again on the main out and you have a perfect feedback loop…

you may have to explain the routing in detail to receive help

more appropriate user topic already exists