<human>: Condense the text into a few key points

Without going into details about numbers and revealing company names, this is what happened.

I am working at Acme Software Development as a web developer, and one of the recent projects we got was to do a complete update of Big Company's website. This website features their product line, has information about their products, and has an e-commerce section that lets people buy their products.  Pretty standard stuff. I was put as the lead developer for the site so almost all of the code for the server side was written by me, and therefore of I had responsibility for it. The bulk of the project was wrapped up quite nicely and they were thrilled with their new website.

After the launch of the new site, a lot of small updates were made to fix any outstanding issues and make tweaks and add features that they wanted. One of the last updates that went live included modifications to their e-commerce section, which unbeknownst to us had 1 single error in it that impeded the processing of credit cards while still completing orders and shipping them out.

Fast forward one month. While I was doing another update and testing some unrelated features, I stumbled upon some odd database records of orders and as soon as I saw them I could few the warmth go out of my body and I immediately knew something was wrong. In a panicked haze I started investigating further into the problem and confirmed my fears: I had caused 1 month worth of products to be shipped for free to all customers. There are no words that can describe the feeling of gut wrenching dread that I felt as I dug deeper and deeper into the issue, I felt like I was essentially digging my own grave.

Things have since been fixed, but I'm still really nervous about anything I code. The day after it happened, I was honestly too scared to write anything at all.
<bot>: Unknowingly crippled the e-commerce section of a website, and let a month worth of products get ordered for free.