Drainage channel - Inliner method goes wrong - Normal?

Hello, my old building renovation project is coming to an end and last but not least the drainage channel was renovated. Trenchless using the inliner method. In the final acceptance protocol, the whole thing looks as shown in the picture. Normally, it shouldn’t look like this, right? What do experts say about this? Thank you very much and best regards. KM

Hello, my old building renovation project is coming to an end

Well, then get it into the house pictures thread.

So at first glance, I would say that the cross-section has been considerably narrowed. Maybe mill it out again and redo the spot?? Were those several short liners, or one long inliner?