It is exactly saying 'distribution' private key is missing.
for the red marked certificate. Whoever created the distribution certificate will be having the private key in their key chain. get the certificate and private key (both selected)export as .p12 file. remove the current public certificate and import the exported file into keychain
It is exactly saying 'distribution' private key is missing.
for the red marked certificate. Whoever created the distribution certificate will be having the private key in their key chain. get the certificate and private key (both selected)export as .p12 file. remove the current public certificate and import the exported file into keychain