indentation error

hi freinds, i know I must be mixing tabs and spaces but for the life of me I struggle so much to fix them . Like I try deleting all my whitespace and redoing it -- but I'm just fighting with this forever, is there a whitespace viewer? I see there's those little vertical dotted lines that show tabs but even when i'm lining those up I'm getting errors somewhere in my whitespace help!

edit -- ok i see where I can highlight all the lines and indent them and unindent them but is there anything else i could try or view? thanks yall !

Our editor does not have a way to show whitespace.

Edit: you actually can see invisible chars in the editor -- you need to press Ctrl + , (Control and comma) keyboard shortcut to open settings menu, and check "Show invisibles" setting. Unfortunately those settings are not persistent.