asset_ path_ not_ string
Asset paths are required to be file paths (strings).
Description
#
The analyzer produces this diagnostic when an asset map contains a
path
value that isn't a string.
Example
#
The following code produces this diagnostic because the asset map
contains a
path
value which is a list:
name: example
flutter:
assets:
- path: [one, two, three]
flavors:
- premium
Common fixes
#
Change the
asset
map so that it contains a
path
value which is a
string (a valid POSIX-style file path):
name: example
flutter:
assets:
- path: image.gif
flavors:
- premium
Unless stated otherwise, the documentation on this site reflects Dart 3.9.2. Page last updated on 2025-9-1. View source or report an issue.