getAmountsOut returns amount which is way less than the actual amount showing in UniSwap app

[0AX0A]

we are using getAmountsOut function to get the estimated amount of token to be swapped , once we pass 8.7 eth , the amount of specific token it returns as raw value is something around 7.9 eth and we got sandwiched.

What can be the possible issue here ?

[theclamss]

Same problem