3b_inputsLoop.gms doesn't work as intended.
The current implementation of "3b_inputsLoop.gms" uses the 'execute_load' command to refresh the desired data. However, it seems that the 'execute load' command replaces all data in the loaded set/parameter. This erases any long-term data that might be required to cover for the entire modeling horizon, potentially resulting in erronous model behaviour.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information