Flutter Pub: Expected a key while parsing a block mapping. path:

Question

I\'m using JSON file and register in Pubspec.ymal but showing error and also when I use an image and register it, the same error also occurs. Maybe there is a f

Answer 1

Spaces are significant in YAML

assets is indented too far

flutter_test:
  sdk: flutter

flutter:
  uses-material-design: true
  assets:
    - loadjson/person.json

Answer 2

**Error on line 46, column 4: Expected a key while parsing a block mapping. assets:

flutter: uses-material-design: true assets: - assets/dhaka.jpg**

Make sure when you uncomment the line please check indentation. if indentation is wrong it's going error. flowing this image. Happy coding !!!

Answer 3

Error on line 29, column 4: Expected a key while parsing a block mapping. assets:

flutter: uses-material-design: true assets: - assets/images/image.jpg

In my case i just added # in front of uses-material-design: true

Try below code

flutter:   

  # uses-material-design: true 

   assets: 
    - assets/images/image.jpg

its working fine.

Answer 4

With removed comments, original, generated by default pubspec.yaml looks like this

flutter:
  uses-material-design: true
   assets:
    - images/abc.jpg

But it isn't vaild. It doesn't works. It should be:

flutter:
  uses-material-design: true
  assets:
    - images/abc.jpg

Important: Spaces are significant in YAML

Answer 5

As @Baftek mentioned , just indent before uses-material-design:true and press Ctrl+Alt+l (Intellij or Android Studio) to reformat file.

Answer 6

It is because of the indentation of your code.The uses-material-design should be on the same line vertically as the assets:.

 uses-material-design: true

 assets:
   - images/picture.png