Waiting for another flutter command to release the startup lock

Question

When I run my flutter application it show

Waiting for another flutter command to release the startup lock

this messages and not

Answer 1

For me, the issue's root cause on my Mac device was a version of the flock binary it was not expecting. Removing it from the path did the trick; probably a BSD vs GNU syntax issue.

Answer 2

Restart your IDE first and then run the following command in project folder from terminal

killall -9 dart

It worked for me. Hope it will help some of the guys facing the same problem.

Answer 3

I use a Mac with Visual Studio Code and this is what worked:

Shutdown your PC and switch it on again. Don't use the restart function. I restarted 2 times and it didn't work. Only shutdown worked.

PS: I tried out the following:

1. Delete lockfile;
2. Run killall -9 dart;
3. Restart my PC.

But they all didn't work.

Answer 4

For Newbies

The simplest solution, although a little time consuming would be to restart your computer or simple logout from the current user and login again.

Answer 5

In my case, following command in Terminal helped (as suggested by Günter):

killall -9 dart

On Windows (as suggested by upupming):

taskkill /F /IM dart.exe

Answer 6

Most are saying killall -9 dart but nobody mentioned pkill -f dart which worked for me.

The difference between the 2 is explained here.