Error when creating: "Requirements failed for platform Web. Skipped"

### :information_source: Info
v0.14.1

### :speech_balloon: Description
When running "dart run flutter_launcher_icons -f flutter_launcher_icons.yaml" I am getting the Message ...
"Requirements failed for platform Web. Skipped"
... and no icons are placed in the folder "/web"

Icons for iOS and Android are build great.

This is the content of my flutter_launcher_icons.yaml:

flutter_launcher_icons:
adaptive_icon_background: "assets/icons/adaptive_icon_background.png"
android: true
ios: true
remove_alpha_ios: true
web:
generate: true
windows:
generate: false
macos:
generate: false

image_path: "assets/icons/icon.png"
image_path_ios_dark_transparent: "assets/icons/ios_dark_transparent.png"
image_path_ios_tinted_grayscale: "assets/icons/adaptive_icon_monochrome.png"
adaptive_icon_monochrome: "assets/icons/adaptive_icon_monochrome.png"
adaptive_icon_foreground: "assets/icons/adaptive_icon_foreground.png"

Start by reproducing the issue with dart run flutter_launcher_icons -f flutter_launcher_icons.yaml and the configuration shown in the report. Trace the web generation requirements that produce “Requirements failed for platform Web. Skipped”; done means the command completes and the expected icons are placed in the web folder without breaking iOS or Android generation.

Written by the indexing model from the issue text.