react-app-polyfills/ie9 does not support "FormData"

Created by: Terryand

Is this a bug report?

Yes

In IE9 react-app-polyfills/ie9 does not support "FormData"

Did you try recovering your dependencies?

No

(Write your answer here.)

Which terms did you search for in User Guide?

(Write your answer here if relevant.)

Environment

Windows10 + IE9

(paste the output of the command here)

Steps to Reproduce

(Write your steps here:)

Expected Behavior

(Write what you thought would happen.)

Actual Behavior

(Write what happened. Please add screenshots!)

Reproducible Demo

(Paste the link to an example project and exact instructions to reproduce the issue.)