Works on android. Crashes on iPHONE 8.

[vincent youmans]

works on an ANDROID phone.
But crashes when I try to use Camera on iPHONE 8.

//=======================================
Launching lib/main.dart on Vyiphone8 in debug mode...
Automatically signing iOS for device deployment using specified development team in Xcode project: 38S4247WBZ
Starting Xcode build...
Xcode build done.
Installing and launching...
Traceback (most recent call last):
File "", line 1, in
File "/Users/vyoumans/anaconda2/lib/python2.7/copy.py", line 52, in
import weakref
File "/Users/vyoumans/anaconda2/lib/python2.7/weakref.py", line 14, in
from _weakref import (
ImportError: cannot import name _remove_dead_weakref
Syncing files to device Vyiphone8...
Lost connection to device.