When I run pets/v23 from page 225, I get a quick flash of the “control panel” window, and then the program exits. There is no output in the console other than:
Process finished with exit code 0
Same problem for pets/v24 .
For pets/v25 and pets/v26, I get a single window, and then after the 15 second delay, rather than a second slide show starting, the program exits.
book-kotlin-coroutine-confidence version B3