When there's a disagreement, ask yourself: "Suppose hypothetically that I'm wrong and the other guy is right. In what way would I ever find out and learn better?" If there's no good, realistic answer then you're bad at paths forward.
There exist methods for finding out you're mistaken about disagreements that aren't overly time consuming, and paths forward discusses them. (This has some overlap with Popper, but also adds ideas like having a public, written account of your position, by you or someone else, that you believe is correct and will take responsibility for. Popper didn't cover how to address all criticism without it taking too long.)
If you want to understand how paths forward work, go through these links: