Having trouble in running default flutter application on my real android device - flutter

Just getting started with flutter development and facing this error

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I just launched flutter app on a physical device yesterday, and now I am getting this issue. Any solutions?

I have been running flutter in emulator and just launched it on a physical device yesterday, and now, I am getting this issue. I can neither launch emulator nor physical device now. I have tried many things, and have flutter SDK components installed. My android studio is the latest version. I am a beginner to flutter, would be a great help if you could help.HERE IS THE IMAGE:

Problem in building and running flutter app

After some months of stop I'm trying to launch again an old flutter app, but idk I have a lot of problems. I had to install again flutter on the pc.
This is the error:

Flutter app run on emulator but not on my physical device

My Project runs on emulator without any error but when i run it on my physical device it stuck while installing the apk. It does not show any error just stuck on installation.

Error Connecting to Service Protocol on Real Android Phone in Flutter

I'm working on bluetooth low energy with flutter. I updated flutter on android studio and so i have this error and this error write as :"Error connecting to the service protocol: failed to connect to http://127.0.0.1:52524" in run terminal so i could not run my program on real phone so how can i fix this problem, by the way my phone's android version is Android 5.0.1

Flutter showing 'No Devices' even the devices are started

Flutter run is not working when I started the emulator and the emulator seems to work fine. Where's the problem currently running in UBUNTU