Repeat blood test

#1stimemom hi there, I’m 17weeks 1 day now. Just did my Harmony test 2 weeks ago and I received a call from the doctor saying I need to redraw the blood for the test due to Technical issue. It makes me wonder is it something wrong with my baby and I’m kinda anxious with this news now. Anyone encounter the same experience ? Hopefully it’s just my anxiety and everything is fine.