[BUG]: broken with p5.js 1.10/1.11

[eyaler]

exporting the model to p5.js 1.10 - 1.11 gives the error: p5.js says: [mySketch, line 33] An error with message "cnv is undefined" occurred inside the p5js library when image was called. If not stated otherwise, it might be an issue with the arguments passed to image. (http://p5js.org/reference/p5/image)

downgrading to 1.9.4 fixes it