Frigidaire Washer

All of a sudden, once my regular load of clothes is done washing & rinsing, my washer starts making this loud whining/squealing noise as it is in the spin cycle??? I have taken the clothes out & attempted to just run the spin cycle to see if it does it without clothes in it & it continues.
Could this be a belt or the agitator?? I had washed some bath rugs a few weeks ago & for the most part they fell apart (new) and I had a lot of lint in the bottom of the tub… I ran the washer a few times w/o any clothes to clean it all out. Any suggestions. It’s about 6 1/2 years old.