import json causes an error on Firefox

[Jérémie Lefrancois]

Below minimal example to reproduce.

CODE

from browser import console 

import json 

import re 

console.log(json.dumps({"a":1})) 

console.log(re.findall(r"\d+", "123 abc 456"))

RESULT
Traceback (most recent call last):
File "#main", line 1, in
import index
File "VFS.index.py", line 2, in
import json
File "VFS.json/init.py", line 120, in
from.encoder import JSONEncoder
File "VFS.json.encoder.py", line 3, in
import re
File "VFS.re.py", line 1, in
import enum
JavascriptError: SEQ is not iterable

ENVIRONMENT
Need to be Firefox to have issue (both Android and Linux)
Else Ok (fortunately... for the moment ???)

So site built on brython does not work any more on Firefox ;-(