[BUG] Error with lwt_example

[math-gout]

Describe the bug
After compiling the toplevel example and opening the index.html in the browser, this error pops up in the console :

Fatal error: Toplevel bytecode executable is corrupted
js_print_stderr @ toplevel-4.12.0.js:1413

Expected behavior
The toplevel should load as expected

Versions
I used the latest release, js_of_ocaml 3.10.0
Note that this issue didn't occur on 3.9.1