Problem with using Chrome Dev Tools to debug

I am fairly new to coding and just trying to get better at debugging. I've watched video tutorials of Google Chrome Dev Tools, using breakpoints and pausing code, but i find i struggle to get my head around it.

I'm trying to fix a bug in a React file by setting breakpoints on the line of code where there's an error. When i try and pause the code and use step over/into next function call a new tab called VM2545 opens with code i don't understand, rather than staying in the file i'm trying to debug. I am given an option to "pretty print the minified file", but i'm not sure what i'm supposed to do with it.

Whenever i've watched videos of debugging in action it seems straightforward and what I experience seems different to what i watch. I'm not sure what's going on.

How many English words
do you know?
Test your English vocabulary size, and measure
how many words do you know
Online Test
Powered by Examplum