Errors at ECC key generation in non-interactive mode

[Ryru]

Hi List

I get these errors while trying to create a new ECC key:

$ gpg --batch --gen-key Desktop/params-ecc.txt
gpg: key ABCDEFABCDEFABCD marked as ultimately trusted
gpg: error reading rest of packet: Invalid argument
gpg: error reading rest of packet: Invalid argument
gpg: can't encode a 256 bit MD into a 88 bits frame, algo=8
gpg: can't encode a 256 bit MD into a 88 bits frame, algo=8
gpg: revocation certificate stored as
'~/.gnupg/openpgp-revocs.d/ABCDEFABCDEFABCD.rev'

My parameters are:

$ cat params-ecc.txt
Key-Type: EdDSA
Key-Curve: Curve25519
Key-Length: 256
Subkey-Type: ECC
Subkey-Curve: Curve25519
Subkey-Length: 256
Name-Real: <name>
Name-Comment: <comment>
Name-Email: <mail>
Passphrase: <password>
Preferences: S9 S13 S8 S12 S7 S11 S10 H10 H9 H8 Z3 Z2 Z1
%commit

gnupg creates a key though, but I could not find any hints regarding the
errors. Do I use wrong parameters?

Thanks and regards
Pascal