Possibly the card or contacts in the camera have developed a fault, but before you go there, check the card. SD type cards have a little switch on the card that can write protect or "lock" it. Take the card out of the camera and check this switch. To unlock it, it should be moved towards the edge of the card which has the electrical contacts.
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Possibly the card or contacts in the camera have developed a fault, but before you go there, check the card. SD type cards have a little switch on the card that can write protect or "lock" it. Take the card out of the camera and check this switch. To unlock it, it should be moved towards the edge of the card which has the electrical contacts.