Time Machine not backing up

Hi Eduardo,

My Time Machine backup is not being performed since October 6. I include the error message I’m receiving. see attached file.

Can you help?
mallonyIT TechnicianAsked:
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This link suggests: https://support.apple.com/kb/PH18844?locale=en_US&viewlocale=en_US

Open Time Machine preferences and reselect your backup disk.

If that doesn't work, use AirPort Utility to make sure it’s set up properly and connected to your network.

Click the Finder icon in the Dock to open a Finder window, then look in the Devices section. Your backup disk should be listed. If it’s not, it may be turned off, defective, or currently unavailable on the network.

If you back up to a Time Capsule that has a password, the password may have changed. Log in to your Mac with the account you were using when you first set up Time Machine, open Time Machine preferences, reselect the backup disk, then enter the new password.

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mallonyIT TechnicianAuthor Commented:
Thanks for your help.
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