no access to time machine backups after fresh Catalina install
I had a very slow running MacBook Pro that I wiped clean and did a fresh install from a bootable usb. I updated before the reinstall that was already using Catalina. Now I have no backups available to retrieve my data. The time machine is accessible and I can see that the Time Machine hdd still has a lot of data on it but I cannot access it. Some help would be very appreciated. I don't know where to go from here.
MacBook Pro 13″, macOS 10.15