Please change the

`"keyHash": "keyhash",

in the policy script with you key hash. You can generate key hash using

cardano-cli address key-hash --payment-verification-key-file payment.vkey

exact command will depend on the location of your keyfiles

Would you mind changing the

`"keyHash": "keyhash",

in the policy script with you key hash. You can generate key hash using

cardano-cli address key-hash --payment-verification-key-file policy.vkey

exact command will depend on the location of your key files.

After including this Key Hash in the policy script, the minting transaction must be signed by the corresponding signing ket(policy.skey). The transaction also has to be signed by the wallet which is paying the fee. Unless these two signing keys are proper the transaction will not get submitted.