Fix Flutter Error : Cannot resolve symbol for properties and Gradle exception

Have a problem on Cannot resolve symbol for properties and Gradle exception.
Follow with me :
1-
File : Project Structure
Under Project Settings/Project : Set Project SDK to Android API 29 Platform
2-
here should be a notification stating there is an invalid item in the dependencies list under Project Structure/Problems. If there is, go to :
Project Structure
Under Project Settings/Modules
select app_name_android
Dependencies tab
choose the latest "Android API 29 Platform" in the Module SDK box.
3-
Update GradleException() to FileNotFoundException() under android/app/build_gradle since it's not supported in the Java version of Android API 29.

[intotheelements]

You deserve credit for this. Former iOS developer developing for Flutter and the whole Android ecosystem is new to me. This is a straight forward solution to an otherwise somewhat ambiguous problem. Thank you!

[erkindovranov]

finally, have been trying to fix this headache for some time from different sources. this was exactly what I was looking for. well done!!!

[aksa]

Well done dude a short video straight to the point.

[yogirajbhoomkar]

Thats exactly for what i was struggling for !! Well done !!

[AnthonyGarner_bzaromedia]

Jazzak ALLAHU Khayran Ya Akhy. I would've never have figured this out and I have so many times in the past, just started over. Awesome! ALLAHUMMA Barak Lahu

[pratyaysinha]

I was stuck to this problem for 5 days...
Very well done.
Thanks

[mohamedabosaif]

Excellent Job, well done . straight to the point, you solved my problem. thank you very much

[MANISHAGUPTA-tejl]

thank you so much man...i spent hours trying to figure out why my app wast running tysm!!!

[CSMSecurityLocksmiths]

Thank you so much, I've been trying to fix this error for a while.

[muhammadqais]

thanks you so much for such a valuable content! i was stuck from last hour and unable to understand what's going on...thank you so much..🤲

[lovemorepanashematiyenga]

been looking for a solution for days, thank you very much for the video, +1 sub

[evanjohn]

Much appreciation to you brother my problem has been solved

[gustavocosta]

thanks, my problem was solved, I was already hopeless. thank you very much for your help :)

[mohammadcreations]

masha ALLAH keep it on sir
i have solved this issue after watching your video
thank u so much

[bigikc]

Thanks for the help!! I was struggling for the same

[deepakmahanubhav]

Thank you so much for this help, I have serch everywhere but finally got solution here.

[nandigramahareesh]

Thank you very much, i was stuck here for a long time

[shreyaaxv]

Thank you so much!!!! Really appreciate ur efforts🙏🏻

[charisaemmanuel]

Hi, thanks so smuch for this...you're the best!!

[visamalog]

This worked for me, thanks!
I also had to change the debug thing at the end of the file for release so I could sign the app.