Flutter pub get takes too long to execute - flutter

When running a new application "flutter pub get" in Vscode keeps running without completion.I have tried flutter clean , and reopening vscode.


I think you have to check the proper package name. Maybe you misspelled the package name or else your internet is not working fine.


I was facing same issue, I checked all package names, they were correct. I did run flutter clean and then flutter pub get and it's worked. Hope! this might be helpful if some one faces same issue as I was.


Try flutter clean command, also remove pubspec.lock file in root directory then re-run this command flutter pub get.


Actually it would be the issue related to the network rules in your system. means issue is related to IT team. they will unblock your firewall or use network proxy to fix this issue.


While my normal internet connection took more than 15 minutes, I connected to vpn from a different country and tried flutter pub get. It worked pretty fast.


I got the same issue and I resolved it by synchronizing date and hours of my computer.
With an incorrect date, you can have some network issues.
(My computer's date was set to 'yesterday')


On Linux, this worked for me and for many other people...
It should work for you too.
export PUB_HOSTED_URL=https://pub.flutter-io.cn
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
On windows, you should create an environment variable with:
name: PUB_HOSTED_URL
value: https://pub.flutter-io.cn
name: FLUTTER_STORAGE_BASE_URL
value: https://storage.flutter-io.cn
#Code gotten from MathiasGodwin on Grepper


Step 1: flutter clean
step 2: remove pubspec.lock
step 3: If your project has lots of dependencies then load 1 or 2 at once .
It can happen because of lots of dependencies and slow internet connection.


I disconnected from the VPN and it worked for me.

Related

Project files can't see library

There are many libraries I use every day from pub and they work. But today I run into a problem with qr_code_scanner. After installing it with flutter pub add qr_code_scanner and running flutter pub get, I get in code:
Same with auto import for classes from this file like QRViewController. What I also did is running flutter upgrade, flutter clean and everything else that came to my mind - still getting this error with that package.
Any other thoughts how can I solve it?

Some of the packages you are using are upgraded to flutter3 and some are still Flutter version < 3. Which is why you might be facing an issue. If you are trying to build an older project I would recommend you to downgrade your package versions which is compatible with flutter < 3 and use flutter version < 3. If you are adding any packages through pub add you might get an error if the pub get is not resolved. Please check the same in terminal.

For anyone who will have the same issue, I found a workaround. I've also tried few other libraries that beside the fact was installed couldn't access them from anywhere in code.
So after all every pub.dev lib is just the code right? You can download the source file and add it into your lib folder. Well, you have to upgrade it manually if needed but at the end it works and that's the main goal!
EDIT:
Another possible solution, as I found out, I did reset my Mac, upgraded environment (VS Code), done flutter clean and flutter pub get and looks like it's working as it should without mentioned workaround so probably the issue was around the coding environment rather than with Flutter and fetched libraries.

Unable to access flutter doctor from my flutter console [duplicate]

When I run in terminal flutter pub get is stuck it's showing
OS MacOS Catalina 10.15.3
Got TLS error trying to find package launch_review at https://pub.dartlang.org.
pub get failed (server unavailable) -- attempting retry 1 in 1 second...
Got socket error trying to find package launch_review at https://pub.dartlang.org.
pub get failed (server unavailable) -- attempting retry 2 in 2 seconds...
Got TLS error trying to find package launch_review at https://pub.dartlang.org.
pub get failed (server unavailable) -- attempting retry 3 in 4 seconds...
Got socket error trying to find package launch_review at https://pub.dartlang.org.
pub get failed (server unavailable) -- attempting retry 4 in 8 seconds...
Got socket error trying to find package launch_review at https://pub.dartlang.org.

Quick fixes before explanation:
Restart your router! Works for me several times.
Make sure your network is not behind a proxy
Make sure you can ping to pub.dev without any packet loss
Try to close all of your dart.exe processes before retying to perform the flutter pub get
Try to delete an existing package from your pubspec.yaml and re-get it to see if it works
Try to manually add the package to your project
So, I had (and sometime still having) the same issue. I've analyzed it and came to a conclusion that the package download manager and the server that hosts those packages aren't reliabe at all. Very small packages might just successfully be imported with "flutter pub get", whereas big ones might last forever to download. This is definately a networking issue, on either yours or their side.
Just for verificatioin that we are indeed experiencing the same issue:
open your cmd (no matter t OS) and run: ping -t pub.dev .Now, if you see those inconsitent replies from the server, it means there's something wrong with the network (yours or their side). This looks something like this:
Open up your task manager and look for the latest dart.exe task (it should be invoked the moment you flutter pub get. This task is the package that is being downloaded. If you see the process size never exceeding a certain size, and the get command is still stuck, it only indicates a network issue and the package might never be downloaded successfully. For example, my attempts to get the carousela_flutter 1.4.1 package ended up with a halted process size of around 60mb, looks this this:
If you wait for a relatively large amount of time (10 minutes I would say is enough) and the connectivity issue is still not resolved, you will see the following msg from flutter:
"Process finished with exit code 0".
I suggest you try another time or maually add the package.
p.s: it doesn't happen with all of the packages and from my investigation is seems to be related to the size of it. e.g, I managed to get the carousela_flutter 0.7.0 package, but the 1.4.1 failed.

In my case, The host of my ISP was blocked so it could not get the package and it was showing pub get failed (server unavailable) -- attempting retry 1 in 1 second...
So I turn on my VPN and tried once again and this time it was a success

If its a git error, use this command:
git config --global url."https://".insteadOf git://
More info here

502 Bad Gateway trying to find package package_name at https://pub.dartlang.org.
If you click on the link, you'll find that the website is down. The same is also applied to https://pub.dev/.

I´ve solved it on my Windows machine.
After many tries from answers in many discussions out there, I tried a lot of stuff, like:
Restarting the machine
Deleting the cache folder (the dart-sdk download may be restarted)
Adding dart-sdk in the Environment Variable Path
X:\Dev\Flutter\bin\cache\dart-sdk\
Adding dart-sdk´s bin folder in the Path variable (for both Environment and User Variables) (desperate action, I know)
X:\Dev\Flutter\bin\cache\dart-sdk\bin
And still didn´t work.
BUT... I´ve found on this thread something about a proxy problem.
Then I´ve decided to try it out on my Windows machine, and it worked (finally).
Try typing this on Power Shell:
$Env:https_proxy="your.proxy.here:8080"
Then try flutter doctor again

hmm, i know how frustrating it can be trying to solve the issue, the best solution to this is to use vpn and connect to another server. this way i was able to solve the problem without stress

As said it might be something that has to do with your network....
Disconnecting and reconnecting fixed mine.

Make sure no firewall is blocking it.
Check for Internet connectivity too. Search your browser, don't rely on the windows wifi symbol.
For me, KIS (Kaspersky) was blocking pub.bat.
If that is the case please also check---- Flutter, dart, android studio, Gradlew.bat, sdkmanager.bat, adb.exe, qemu-systems, emulator-check and google for any blockage. (just search in firewall settings).

In my case it was my virus program (AVG AntiVirus' Web Shield) that suddenly caused pub get to fail.

Because restaurant depends on flutter any from sdk which doesn't exist (unknown SDK "flutter"), version solving failed
fix proplem
done
change this package
this path prev last
path_provider_windows:file:///C:/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-2.0.5/lib/
change path fluatter plus /all
path
path_provider_windows:file:///C:/all/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-2.0.5/lib/
its ok
thanks

I was able to resolve it by using Visual Studio Debuggable Package Manager PowerShell, on your system open visual studio debuggable package manager and then type in flutter doctor it will resolve it within seconds

make sure there is no typo in pubpspec.yaml check it on here https://stackoverflow.com/a/72198419/8122500

Flutter - Pub failed to rename directory because access was denied

I have installed flutter 2 on my machine, and since this morning I have been receiving this error, when I try to give flutter pub get, in my terminal, or simply flutter doctor. I found several solutions on the internet but I don't know what it can be, and none of them solved my problem. I saw it on one of the sites that may be conflicting with antivirus, but I installed my new one yesterday, and it started to give error only today.
flutter doctor
Pub failed to rename directory because access was denied.
This may be caused by a virus scanner or having a file
in the directory open in another application.
Running "flutter pub get" in flutter_tools...
pub get failed (1; in the directory open in another application.)

There were GitHub issues that was filed before relating to this. There were no proper solutions to this, instead you can try some solutions that was mentioned in the following issue tickets:
https://github.com/dart-lang/pub/issues/1798
https://github.com/flutter/flutter/issues/16100
You can try one of the solution mentioned in this GitHub thread:
Try to run flutter pub cache repair.
There is another ticket that is still open for the troubleshooting to be added in the Flutter documentation for reference of everyone. And to be considered as the universal solution for this problem.

Package is not showing up in the dart packages folder even though it is installed

I have been having issues with installing this package https://pub.dev/packages/graphql_flutter/install one of it's dependencies is this graphql package https://pub.dev/packages/graphql. When i do pub get it installs en shows everything expect for the graphql package in the dart packages folders. I have tried to install the graphql package separately but the package still doesnt show up than. And the import still gives the error "Target of URI doesn't exist: 'package:graphql/client.dart'." But it does show up in flutter/.pub-cache/hosted/pub.dartlang.org so i dont understand why it doesnt show in my project. I have tried using flutter clean, flutter clean pub cache and androidstudio's invalidate caches/restart function to no avail. I have also tried restarting android studio and my pc multiple times. I have also tried it with androidstudio run as admin.
This is my pubspec.yaml
this is part of my Dart packages folder as you can see it does not show
And this is the pub.dartlang.org folder on my pc

It ended up getting randomly fixed after 3 days. I just started android studio up and tried it again and suddenly it worked. No idea what fixed it in the end

Seen this issue a few times. Open Task manager in windows and check for adb.exe. There should be one copy running. I had 2 copies so removed 1 and restarted the other.
right-click --> end task for both.
All ok then.

Reloading VS code worked for me..
Reloading can be done ---> Command + R for Mac.

Why does flutter packages get fail? Same directory cloned from github but on one pc package get fail

Cloned from github a flutter repo onto Laptop(win10) and Desktop (win7) but on Desktop package get fail with error code 1
First two images show success on laptop pc.
See Below Desktop Fails to get packages.
Where should I correct this on Desktop?
However, I can create new app without any error on Desktop.
Please help, Thank you.

I deleted the two log files and also pubspec.lock file and run Flutter Get Packages. This Resolved the issue. This agonizing error ate up few hours.

I tried
flutter clean
flutter packages get
it worked