I'm not sure this is a beginner's question, so excuse me if that is the case.
I cannot install Apple WWDR certificate. I downloaded it, but then the keychain tells me the following: (This is in Spanish, so I translated as best as possible)
"Keychain" Root system "can not be changed." "To change the trust or root certificate, open the Keychain and change the trust settings. New root certificates must be added to the start session of the current user or to the keychain system if they must be shared by all users of this computer."
How can i solve this?
Update: in fact, I can’t install a special certificate that I made and sent for approval (approved). I downloaded it, but I can’t install it! I have the same error appearing.
This is mistake:

Thanks for the help!
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