DefaultCacheManager emptyCache() do not work

[mmshahshahani]

🐛 Bug Report

Hi I'm using DefaultCacheManager to read a file from an URL like bellow :

DefaultCacheManager().emptyCache();

      file = await DefaultCacheManager()
          .getSingleFile(url)
          .onError((error, stackTrace) {
        isRead = false;
        return fil;
      });

and next time I change file content but first content is returned and emptyCache() do not work .

I tried like below too :

DefaultCacheManager dfcm = new DefaultCacheManager();

dfcm.emptyCache();

      file = await dfcm
          .getSingleFile(url)
          .onError((error, stackTrace) {
        isRead = false;
        return fil;
      });

Expected behavior

Reproduction steps

Configuration

Version: flutter_cache_manager: ^3.3.0

Platform:

• [x] :robot: Android