After replacing the suspension there is a loud bang sound when driving over speed bumps?

I just changed my vehicle listed above suspension and now when going over speed bumps if I have any accelerator applied whilst going over it there is a loud bang on the front left corner it kind of sounds like the wheel is lifting off the ground gaining wheel speed and then touching the ground again which slows it down instantly causing the sound but I'm not sure how that could be happening as I just changed the suspension in an official Peugeot mechanic so I am not sure why or how the sound could be happening.