Hi, I met the following problem as I try to get data from Materials Project at present. It seems to be a common problem if chemical formula (Fe2O3) or chemsys (Fe-O) is used for vasp data. Thank you.
This appears to be a bug in the latest updated on our server where it is not by default only querying valid materials. The result is you’re getting deprecated materials that fail in this way. We’re working on fixing this issue.