Infinite loop trying to create a netCDF with empty timestamps

[Mayetea]

In the tutorial 08_Getting_and_bias_correcting_CMIP6_data, if the future_start_day and the future_end_day are set to a date prior to January 1st 2015. The program gets into a loop at the end ( Line : fut_dataset.to_netcdf("future_dataset_tmp.nc") ). We should have a mecanism to prevent this loop (simply crashing would be "better").