How to manage Xcode signing and Entitlements for Open Source projects with contributors?

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Summary Managing Xcode signing and entitlements in open-source projects with contributors is challenging due to hardcoded Team IDs and provisioning profile mismatches. This postmortem addresses build failures caused by DEVELOPMENT_TEAM and entitlement configurations, preventing contributors from building the app locally. Root Cause Hardcoded Team ID: DEVELOPMENT_TEAM in project.pbxproj is set to the maintainer’s personal Team … Read more

How to get access to reddit api

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Summary The issue arises when attempting to create a Reddit API application, resulting in an error message about Responsible Builder Policy compliance. This blocks access to the API, preventing data collection for automation tasks. Root Cause Missing policy acceptance: Reddit requires explicit agreement to their Responsible Builder Policy before allowing app creation. Account type mismatch: … Read more

How to calculate the rate of change between current point and the 10th previous point in Apache IoTDB?

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Summary This incident examines a common analytical gap in Apache IoTDB: the inability to compute a rate of change between a data point and an N‑th previous point using built‑in functions. The system supports derivative(), but only for adjacent points. When engineers attempt to compute multi‑step deltas (e.g., 10‑step lag), they discover that IoTDB lacks … Read more

Spring Boot 404 No static resource for request ‘/login’ despite @Controller mapping

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Summary The issue occurs when accessing the /login endpoint in a Spring Boot 4.0.2 application with Thymeleaf, resulting in a 404 error despite a valid @GetMapping(“/login”) mapping in the @Controller. The root cause is Spring Boot’s static resource handling overriding the controller mapping. Root Cause Static resource precedence: Spring Boot serves static resources (e.g., HTML, … Read more

OMPL doesn’t change orientation

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Summary The issue arises when using OMPL with OwenStateSpace for path planning in a ground effect vehicle. The planner ignores the orientation of intermediate states, causing sudden 180º rotations in the path, especially with RRTConnect. This results in incorrect visualization in RVIZ and impractical path execution. Root Cause The root cause is that OMPL‘s OwenStateSpace … Read more

Spyder version 6.1, Spyder-kernels=3.1 in Python 3.8

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Summary Incompatibility between Spyder 6.1 and spyder-kernels 3.1 in Python 3.8 due to spyder-kernels 3.1 requiring Python 3.9+, while Spyder 6.1 supports Python 3.8. This mismatch causes Spyder to fail to start or function correctly. Root Cause spyder-kernels 3.1 explicitly requires Python 3.9 or higher. Spyder 6.1 supports Python 3.8, but its dependency (spyder-kernels) does … Read more

Building appbundle failed debug symbol native library

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Summary Flutter app bundle build failure occurred due to debug symbols not being stripped from native libraries. The error manifested during the bundleRelease Gradle task, preventing the release build from completing successfully. Root Cause Debug symbols were not stripped from native libraries during the build process. Obsolete options (source and target values of 8) in … Read more

Supervisor usage advice

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Summary This incident examines the risks of replacing Supervisor with a custom infinite-loop Bash script to run Laravel’s schedule:run command every minute. While the script appears simple, it introduces subtle reliability and operational hazards that become significant in real production systems. Root Cause The core issue is relying on a hand-rolled process manager instead of … Read more