CFD Modelling help

Screenshot by Lightshot keep getting this error message, can you help? Have uploaded hollow casing, centred blades, have created combined component containing casing, blades, fluid volume and rotating zone, but seems to be adding lots of component for each part of the blades…can’t work out what to do. Combined model in autodesk: Screenshot by Lightshot

Trying to simulate blade designs inside enclosure before 3d printing

Thanks for reaching out @kchester!

Does this great answer from @Retsam help? A multi-region mesh was assigned - this analysis-type requires a single-region mesh - #2 by Retsam