My book download flutter application are downloaded file from api and read app itself but the issue is small size file are downloaded fully and read successfully but 250mb file are not downloading fully so can't read a book app throws error Error below:

Exhausted heap space, trying to allocate 2147483664 bytes. E/flutter ( 4858): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: Out of Memory E/flutter ( 4858): #0

I expact 250mb file download and read successful in my application only