`IFERROR` checks for any error, so "N/A" would be handled as well if it's an error. If you wanted to handle different errors in different ways, you could use:
`=IFERROR(A1, IF(ERROR.TYPE(A1)=2," ", IF(ERROR.TYPE(A1)=7, "Not Available", "Unknown Error")))` 

2 is the `ERROR.TYPE` return value for `#DIV/0!`, and 7 is the return value for `#N/A`.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence