flutter_downloader local network - flutter

I just started using flutter and tried the file download feature using the flutter_downloader plugin (link). When this plugin is used and there is internet access, the feature runs. But when this plugin is used on a local network, this feature doesn't work. The data/files to be downloaded are on the local network.
Has anyone experienced this, and is it really necessary to use the flutter_downloader plugin with internet access? I tried to read the documentation, and there doesn't seem to be any explanation regarding this. Thank you.

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