[flutter_tools] configure dwds to not serve devtools

[jonahwilliams]

Description

This isn't necessary for any current functionality. Fixes #52269

[fluttergithubbot]

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[jmagman]

RSLGTM

[NicTanghe]

Hello i must say i'm using the latest beta channel build and i'm still getting.

Oops; flutter has exited unexpectedly: "NoSuchMethodError: The method 'toFilePath' was called  
on null.
Receiver: null
Tried calling: toFilePath()".

[jonahwilliams]

Hello i must say i'm using the latest beta channel build

The latest beta channel is older than this PR

[NicTanghe]

he latest release is from 17 march that is newer or is it older in another way ?

[jmagman]

This change is available in 1.15.19. So at the moment it's on master and dev. See https://flutter.dev/docs/development/tools/sdk/releases.

[nttd-jieyangxu]

Im sorry, but i try two dev versions for flutter web, that still happen. anything wrong?
dev version: 1.5.22 and 1.16.1

---

Downloading Web SDK... 8.2s
Launching lib\main.dart on Chrome in debug mode...
Syncing files to device Chrome...
13,882ms (!)
ERROR - 2020-03-20 11:06:30.426168
GET /dwds/src/injected/client.js
Error thrown by handler.
NoSuchMethodError: The method 'toFilePath' was called on null.
Receiver: null
Tried calling: toFilePath()
dart:core Object.noSuchMethod
package:dwds/src/handlers/injected_handler.dart 35:39 createInjectedHandler..

[jonahwilliams]

You're right, that is actually a different issue. Opening a new PR

[nttd-jieyangxu]

You're right, that is actually a different issue. Opening a new PR

thank you! the new PR foe web
flutter/devtools#1752

[jonahwilliams]

#52914

[AttSee]

Launching lib/main.dart on Chrome in debug mode...
NoSuchMethodError: The method 'toFilePath' was called on null.
Receiver: null
Tried calling: toFilePath()
Exited (sigterm)

1.15.17 beta