Have you ever seen a page with “There has been an error processing your request” when using Magento 1 or Magento 2? If no, you are lucky. This page is usually displayed when an issue appears in a system execution flow. Magento processes such issues by creating a separate report file in the var/report directory and by showing the error page with the details. You can also see a similar page “Service Temporarily Unavailable” when the maintenance mode has been enabled. Did you know that you can easily customize these error pages?

Logging system is a very useful tool in Magento development. It is important for developers in the code debugging process, the log files help us determine how the store works, what issues are there, which of the functions do not work correctly. There’s less chances that you will get a raw Magento 2 internal server error without handling it via Magento 2 logging in comparison with Magento 1. In this article we are going to describe the logging system in Magneto 2 and how it differs from Magento 1.

If you are a web developer, there’s one thing you are doing from day to day, no matter how good you are. You can write a good code, and you may know your work like a pro, but usually you have to integrate your solutions into different systems which were, unfortunately, created by someone else. Here we meet the thing that can turn into the nightmare for you if you are following a wrong way – the debugging.

If you look inside of your Magento system.log from time to time, you will notice an error there like the following one:

2011-01-12T14:16:52+00:00 DEBUG (7): HEADERS ALREADY SENT:

Call stack is here..

As you may already know, it can take a lot of time to find the place where the issues like this one appeared. So, let’s investigate why it happens and what we can do to speed up the bug fixing process.

I think everyone who is interested in ecommerce development get familiar with Magento earlier or later. It’s a very popular platform, where a lot of modern programming technologies are used. Since Magento is one of the most powerful and flexible shopping cart engines, it requires a deep level of expertise to develop extensions or even do some basic changes. So we’ve decided to share our tips for Magento Developers in this article. [Continue to Part 2]