**Describe the bug** Autocomplete while importing packages doesn't work. **To Reproduce** Steps to reproduce the behavior: 1. Create a dart file in a flutter project. 2. Start typing `import 'package:..'` 3. Autocomplete doesn't show up. **Expected behavior** Auto-completion for `import`s should work and list all available packages. Downgrading to 3.22.0 fixes the issue. **Screenshots** (same project, same SDK versions,) - Importing while using `3.23.0` version of the extension: https://user-images.githubusercontent.com/23095052/120890762-125aaa80-c605-11eb-8877-1d1250e9581d.mp4 - Importing while using `3.22.0` version of the extension (working as expected): https://user-images.githubusercontent.com/23095052/120890777-2e5e4c00-c605-11eb-9927-c14923e811d3.mp4 **Versions (please complete the following information):** - VS Code version: 1.56.2 - Dart extension version: 3.23.0 - Dart/Flutter SDK version: 2.13.0/2.2.0 - OS: Windows 10