Summary Cross-namespace service resolution failed in a Kind Kubernetes cluster due to missing DNS configuration for cross-namespace lookups. Pods in the prod namespace could not resolve the svc-test service in the test namespace despite valid services and endpoints. Root Cause The issue stemmed from CoreDNS not being configured to handle cross-namespace DNS queries by default … Read more
Summary This incident involved an Angular 21 application where a CanActivate guard incorrectly redirected authenticated users when navigating directly to a route (e.g., /home). The issue occurred only during Server-Side Rendering (SSR), even though a valid token existed in localStorage. Root Cause The guard relied on localStorage, which is not available during SSR. Because Angular … Read more
Summary This postmortem analyzes a common environment‑level failure: LD_LIBRARY_PATH pollution causing subtle runtime conflicts in robotics stacks that mix ROS 2, Isaac Sim, CUDA, and vendor‑specific plugins. The system “worked” at first glance, but hidden library‑resolution collisions broke downstream functionality such as LiDAR /scan topics. Root Cause The underlying issue was residual library paths from … Read more
Summary The question revolves around the feasibility of using codeless ad units in mobile apps, specifically with Google Ad Manager (GAM), for platforms like React Native, Android, and iOS. The inquiry aims to clarify whether codeless ad units are strictly limited to web pages or if there’s support or a workaround for mobile applications. Root … Read more
Summary The script automates screenshot generation from Excel sheets, specifically targeting system version and international/special/branding sheets. It encountered issues due to hardcoded paths, missing error handling, and inconsistent column hiding logic, leading to failed executions and incomplete screenshots. Root Cause Hardcoded file paths: The script assumes specific file locations (C:\Users\Scarlett\Downloads), causing failures on other machines. … Read more
Summary This postmortem analyzes a Google Play Console production‑stage rejection for an Unreal Engine Android game targeting children. The app passed internal and closed testing but failed only when promoted to production, with rejection reasons citing Families Policy and App Stability. This document explains why this happens, what the real root cause usually is, and … Read more
Summary This incident revolves around a common networking misconception: a Gunicorn‑hosted Flask app bound to 127.0.0.1 cannot be reached from any external machine. The service was only listening on the loopback interface, so remote POST requests failed because the server was never exposed to the network. Root Cause The root cause was binding Gunicorn to … Read more
Summary This incident describes a common Power BI modeling failure: actual and forecast data cannot be combined into a single visual when the underlying model does not share a physical time-of-day column and a physical date column across both datasets. The engineer attempted to solve the problem with a measure-generated table, but measures cannot drive … Read more
Summary Publishing a Dash app via Plotly Cloud failed due to a ModuleNotFoundError when importing internal modules. The app worked locally but failed on Plotly Cloud, indicating a discrepancy in the deployment environment. Root Cause The root cause was incorrect module resolution in the Plotly Cloud environment. The app’s structure relied on absolute imports (from … Read more
Summary The DeploymentNotFound error in Azure Foundry occurs when the API deployment for a resource does not exist, causing issues with model deployment. This error can be frustrating, especially when models have already been successfully deployed. Key takeaways include understanding the root cause, real-world impact, and effective solutions to resolve this issue. Root Cause The … Read more