Will one collection on my credit report prevent me from obtaining a mortgage?

I was nineteen at the time and had a secured card I was using responsibly but, I lost my job and had no other choice and had to let it go. I'm twentysix and have four credit cards that I use responsibly I checked my score last month and it was 778? I still see the one collection it should be removed next year that way it will be seven years? I also have a car loan I've been paying on time and it has a balance of five thousand so it's almost payed off.

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