4 articles
RSSHow to fix Langfuse errors — Python/JS SDK init, trace/span/generation hierarchy, LangChain CallbackHandler, OpenAI wrapper, missing usage/cost data, prompt management, and self-hosted Postgres setup.
How to fix Structlog errors — output is dict not JSON, context vars not propagating, stdlib logging not unified, async context loss, configure_once, KeyValueRenderer vs JSONRenderer, and async filtering.
How to fix Loguru errors — logs not appearing after logger.add, file rotation not working, enqueue required for multiprocessing, structured logging JSON, intercepting stdlib logging, and handler removal.
How to fix OpenTelemetry issues — SDK initialization order, auto-instrumentation setup, OTLP exporter configuration, context propagation, and missing spans in Node.js, Python, and Java.