Summary This incident stemmed from an AWS Lambda function receiving a POST request without a Content-Type: application/json header, causing API Gateway to treat the body as plain text and resulting in a null request body. The Lambda code attempted to deserialize this null body, triggering a Jackson IllegalArgumentException. Root Cause The failure occurred because: API … Read more
Summary A VPS configuration issue caused URL parameters to be stripped from 30% of Facebook Ads traffic, leading to broken conversion attribution and “Unknown” visits in ad trackers (MaxConv, Skro). The problem persisted across Hostinger cloud hosting and VPS setups, indicating a server-side misconfiguration. Root Cause The root cause was Nginx misconfiguration on the VPS, … Read more
Summary Capturing the screen on KDE with Wayland requires integrating GStreamer, PipeWire, and the KDE screencast portal. The error g-io-error-quark: GDBus.Error.NotAllowed indicates a permission issue with the screencast portal, not a GStreamer pipeline problem. Root Cause Permission Denial: The KDE screencast portal requires explicit user approval for screen capture. Missing User Interaction: The portal expects … Read more
Summary A gallery in Power Apps failed to filter correctly when combining Text Input and Combo Box criteria. The engineer attempted to use the Search() function, which only supports a single text column, causing the multi‑filter logic to break. The issue stemmed from misunderstanding how delegation, Search(), and Filter() interact in real systems. Root Cause … Read more
Summary This postmortem analyzes why a Shopify app fails the Shopify App Store Review Test for “using session token for user authentication.” The issue is common among new Shopify app developers who misunderstand how Shopify’s session tokens differ from traditional server‑side authentication. The failure stems from an incorrect or incomplete implementation of Shopify’s required JWT-based … Read more
Summary This incident centers on a Google Apps Script PUT request failing with 400/500 errors when calling the Teamhub API. The GET request works, but the PUT request—intended to create a task—fails because Apps Script’s UrlFetchApp uses payload differently than fetch, and the API expects a raw JSON body, not form-encoded data. Root Cause The … Read more
Summary This incident stemmed from a misalignment between a Google Cloud Project and the Apps Script project metadata required for publishing a Google Workspace Add‑on. Although the project number and script ID appeared correct, the Marketplace configuration rejected the form because the Apps Script project was not actually bound to the same GCP project the … Read more
Summary The ABP Framework is a popular open-source framework used for building modular, scalable, and maintainable applications. However, modifying its building modules, such as the login screen, can be challenging. In this article, we will discuss the community support for ABP Framework, how to change building modules, and integrate external databases, APIs, and authentication systems. … Read more
Summary Uploading a bitmap image to Vercel Blob Storage programmatically in a Next.js API endpoint requires proper handling of binary data and correct configuration of the upload parameters. The issue arises from incorrect content type specification and potential buffer handling errors, leading to a 0B file in storage. Root Cause Incorrect Content Type: The contentType … Read more
Summary To display file contents directly in the Windows Command Prompt, the type command is the built-in solution, analogous to the Linux/Unix cat command. Root Cause The user was unaware of the type command, leading to inefficiency in viewing file contents directly in the CMD terminal. Why This Happens in Real Systems Lack of cross-platform … Read more