Install using apt-get Perform the following one-time setup: sudo apt-get update sudo apt-get install apt-transport-https wget -qO- https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo gpg --dearmor -o /usr/share/keyrings/dart.gpg echo 'deb [signed-by=/usr/share/keyrings/dart.gpg arch=amd64] https://storage.googleapis.com/download.dartlang.org/linux/debian stable main' | sudo tee /etc/apt/sources.list.d/dart_stable.list Then install the Dart SDK: sudo apt-get update sudo apt-get install dart Install a Debian package Alternatively, download Dart SDK as a Debian package in the .deb package format. Modify PATH for access to all Dart binaries After installing the SDK, add its bin directory to your PATH. For example, use the following command to change PATH in your active terminal session: export PATH="$PATH:/usr/lib/dart/bin" To change the PATH for future terminal sessions, use a command like this: echo 'export PATH="$PATH:/usr/lib/dart/bin"' >> ~/.profileflutter doctor -vInstall using apt-get Perform the following one-time setup: sudo apt-get update sudo apt-get install apt-transport-https wget -qO- https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo gpg --dearmor -o /usr/share/keyrings/dart.gpg echo 'deb [signed-by=/usr/share/keyrings/dart.gpg arch=amd64] https://storage.googleapis.com/download.dartlang.org/linux/debian stable main' | sudo tee /etc/apt/sources.list.d/dart_stable.list Then install the Dart SDK: sudo apt-get update sudo apt-get install dart Install a Debian package Alternatively, download Dart SDK as a Debian package in the .deb package format. Modify PATH for access to all Dart binaries After installing the SDK, add its bin directory to your PATH. For example, use the following command to change PATH in your active terminal session: export PATH="$PATH:/usr/lib/dart/bin" To change the PATH for future terminal sessions, use a command like this: echo 'export PATH="$PATH:/usr/lib/dart/bin"' >> ~/.profile I had the same problem after importing a flutter project from git. These are the steps to solve the problem. 1. Inside Android Studio File->Settings->Language & Framework->Flutter 2. Choose flutter SDK path: the first time we install flutter, we choose the location where the flutter should be installed. Choose this location. 3. Click OK and the android studio will refresh. Carry on if the problem is solved. 4. If you are still stuck with the error. 5. Goto this link and install Dart. (https://flutter.io/get-started/install/) 6. Goto the same place in settings, ..Language & Framework->Dart and chose the SDK location. This solved the issues for me.