Cannot implicity convert type 'void' to 'Stride.Core.Mathematics.Vector3'

[JustAnotherGameDevWasTaken]

i have a movement script, and i want to move forward in the direction i'm facing, i have this bit of code which i will pass to the character.set velocity in order to move. i'm not sure what to do to fix this error though.

[Eideren]

This is not an issue specific to stride, did you take a look on google, there are loads of resources online for it.
That function returns void, aka nothing. You're trying to assign nothing to test, you can't assign nothing to something.
Rotate rotates the vector you pass in since it's passed as ref.