btMatrix3x3 constructor is not defined

[spikethea]

I've tried creating a new ammo.js class like this.

let rotationMatrix = new Ammo.btMatrix3x3();

And it says that it isn't defined in the IDL but it is. I've also checked my ammo.js file (which is up to date from 3 days ago) and btMatrix3x3 is defined.

here is the console error:

Possible Unhandled Promise Rejection: cannot construct a btMatrix3x3, no constructor in ID

can someone try to replicate this for me to see what the issue is? thank you.