EXPkeysig Invalid

Hello again all! i have had my Le potato stop displaying video when using the recommended Wi-Fi dongle, before i say it is bad i have noticed somethings during updates that might cause it. With the most uncertainty, I have noticed that the signatures for the Index of /repo/ Linux InRelease are not valid. the one that is popping up is EXPKEYSIG 2E5FB7FC58C58FFB deb.libre.computer. Is there any thread already solving this or is there a way for me to correct the key?

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