OpenCart 2.x. How To Upgrade The Engine

I tried this method...updating my ver. 3020 to 3038 but I got blank page

Hi, I upgrade version 2.0 to 3.0 . But it's showing blank page .

Thanks, bro! You are the best!

Hi, came up with this error
The error is on engine/loader.php line 169

Can you upgrade from 1.5.6 to the latest? Same rules or no?

Hi, I just upgrade my opencart to Version 2.3.0.2, and now on the dashboard, I dont have the Extension option on menu. Can you help me?

Can you do a video for the latest upgrade?