Fix Uniswap V3 error, "Fail with Error STF" when swapping tokens programmatically | Code Solution

Published: 23 April 2022
on channel: Blockman Codes

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This is an annoying error for which there is no clear documentation online.
Since I ran into it and solved it, I thought I'd make a quick video for y'all.

It happens when you haven't approved tokens to be spent on Uniswap V3.

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