The community TensorFlow Lite wheel hasn’t been updated to work with Raspbian Buster yet, hence the error. It’s not supported on that platform. See https://blog.hackster.io/benchmarking-machine-learning-on-the-new-raspberry-pi-4-model-b-88db9304ce4, and keep an eye on this https://github.com/PINTO0309/Tensorflow-bin/issues/7 issue to figure out when the wheel is updated.