getting error messages in the UI for production builds

[sriksm19]

getting errors on the users' side in production builds. how do i disable them?

this happens a lot in googleweblight. and also otherwise

[crbrasfield]

I'm getting this exact error page, only in production...

main.9d3f95d1.js:14 ReferenceError: props is not defined
    at error (main.9d3f95d1.js:33)
    at beginWork (main.9d3f95d1.js:14)
    at o (main.9d3f95d1.js:14)
    at i (main.9d3f95d1.js:14)
    at u (main.9d3f95d1.js:14)
    at w (main.9d3f95d1.js:14)
    at _ (main.9d3f95d1.js:14)
    at h (main.9d3f95d1.js:14)
    at d (main.9d3f95d1.js:14)
    at Object.enqueueSetState (main.9d3f95d1.js:14)

[crbrasfield]

It's strange because the page will load fine for about 0.2 seconds, then the error page pops up.