[Issue] Non-specific error message when pasting JWK

“Data provided to the operation does not meet requirements.”

Using the below key, I get the above error message. Severely unhelpful: too vague.

JWT text:

{"kty":"RSA","e":"AQAB","use":"sig","kid":"FHIRKey","alg":"RS384","n":"wX13sp7q6FabPHFwUtEmrf0tyB41Ecw7nqnaUUjxvIzAOmeMGZHz31-WMmgKAAdCSF8yMF-ECc7bP5kSnRBu8GNGdbMi1lz3Zdro-Zn3GNDizvnmgcRXem40NkSMMSL8mwETk7gnZEkLTW1ujPzIQ5HlNFUD5_8K9VtpaabFbZHc-5zSh91DNP5Yla-yqgWmCt07o6_2Wbk6E_z7k9ZunYd9t4-S6QazyyRwvo0kLpfRjaA1BujNH6PErBl47P-EB3xEhfl55sbcRXrucI_LEWT6ghAZorIudG78LuKkSaQfsDhIpGUqwMdyPfRuZi5C1j36MJ7TVFDOg_Nfg7OTJLYT7cau65wK2pPXf0YYDfblyCWzN1P0Xoz5IaYm-oJapKps3RTZTwaKa7lDMiqKDAb3tRnc9SSjGRncCj0xFyqz6Ym4D-wvqWsHmMmc2ujlTkI4TV3QVTs8PcjkR7W2xLWHfv_eOEOjeCbNYxY72yEx-O9tVbtqxRkp83xWiM4wus6xxI7XAoMOsWlyNXlq1ewukY2BFyYS1Doi1CNG3Ad4H1uiR2AhdIE17YaLCuC0wiC_z-f4NzDpaHElt88OQPi36GXf4iEsKx-9RFI0BXcABh1itTMb9xdbXc1b9E6yI-G0Fvd_DzTDLhNcwiX1tqOA98L7qwrrlB2R6Tg9pS0="}

Also, doesn’t seem like the tool supports multiple keys?