Hi, there was a long thread regarding the changes to the orbit files source Orbit file timeout (March 2021) - #203 by anab
For the older acquisitions, this problem can be solved by adding parameters.put('orbitType', 'Sentinel Precise (Auto Download)') to search for the precise orbit file.
You can see in the error message that SNAP searched for the AUX_RESORB but restituted orbit files are available only for the latest observations.