Client side app not running

Short Course Q&A Federated Learning
1

Simulation for lesson 2 and 3 not executing client side applications both on my laptop and google colab
Lesson 2
INFO : Starting Flower ServerApp, config: num_rounds=3, no round_timeout
INFO :
INFO : [INIT]
INFO : Using initial global parameters provided by strategy
INFO : Evaluating initial global parameters
INFO : test accuracy on all digits: 0.1001
INFO : test accuracy on [1,3,7]: 0.0035
INFO : test accuracy on [2,5,8]: 0.2885
INFO : test accuracy on [4,6,9]: 0.0000
INFO :
INFO : [ROUND 1]
INFO : configure_fit: strategy sampled 3 clients (out of 3)

Lesson 3
INFO : Starting Flower ServerApp, config: num_rounds=3, no round_timeout
INFO : INFO : [INIT]
INFO : Using initial global parameters provided by strategy INFO : Evaluating initial global parameters
INFO :
INFO :
[ROUND 1]
INFO : configure_fit: strategy sampled 5 clients (out of 5)

2

I am getting the same issue after trying the lesson 2, I both tried in google colab and jupyter notebook. in both places the output is stuck. I added the output below, if anyone solved it. please help.

INFO : test accuracy on [1,3,7]: 0.2275 INFO : test accuracy on [2,5,8]: 0.1201 INFO : test accuracy on [4,6,9]: 0.0380 INFO : Evaluation returned no results (`None`) INFO : INFO : [ROUND 1] INFO : configure_fit: strategy sampled 3 clients (out of 3)

Full code:-