Ensure you have part01.rar through part08.rar (and potentially more) in the same folder .
Alternatively, if this is for a specific project, letting me know what it is might help me find the right extraction method. GF140222-FH5UE-ELA.part08.rar
This filename appears to be part of a multi-part RAR archive, likely for a dataset, a large software file, or media content. To properly use this piece, you need the rest of the set. Ensure you have part01