It's really frustrating, wasted 3 days to get rid of but still on stuck problem showing on macos catalina version 10.15.1 and windows 7 also. My two PC's showing same error. First when i tried to 'get packages'
it's showing this '/Users/mamun/Developer/flutter/bin/flutter --no-color packages get
Waiting for another flutter command to release the startup lock...'
after few moments it's showing..
'/Users/mamun/Developer/flutter/bin/flutter --no-color packages get
Running "flutter pub get" in flutterx...
Connection terminated during handshake
pub get failed (server unavailable) -- attempting retry 1 in 1 second...
Connection terminated during handshake
pub get failed (server unavailable) -- attempting retry 2 in 2 seconds...,
tried this Waiting for another flutter command to release the startup lock
& https://github.com/dart-lang/pub/issues/1729 also.
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