I've just do a college task, and yeah they provide the source code which I need to re-write it on my own IDE, but after that there is lot of problems with "can not null", after a bit of research then I realize that the flutter SDK version in my task example is 2.2.3 which is lower than mine 2.2.5
Well, when I try to change my flutter version to 2.2.3 too in Flutlab.io the error seem to be decreased and nomore "can not null" error message.
So, I decide to downgrade my flutter version in my local machine too. Here are my step to do that :
# check first my current version
flutter --version
# change flutter channel, but mostly it will on stable by default
flutter channel stable
# the most important things, fetch any new thing from flutter repo
git pull
# the use downgrade command, it should download some of component/dependencies needed for flutter 2.2.3
flutter downgrade 2.2.3
# after that you may see error "There is no previosly recorde" but it's OK
# run flutter doctor the you may see that your flutter version was changed
flutter doctor
# just to make sure, check agai our flutter version
flutter --version
Yeahh boii...
I don't know why it works ?
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