Troubleshooting

Troubleshooting

Symptom	Cause	Resolution
ModuleNotFoundError: langgraph	Wrong interpreter or missing dependencies	Install requirements in the active Python environment
.py not found	Uploaded README used inconsistent names	Execute langgraph_example_multi_agents.py
Notebook not found	Original notebook has exmaple typo	Open langgraph_exmaple_multiagents.ipynb
OpenAI key missing	OPENAI_API_KEY absent or .env inaccessible	Set key locally; never commit it
Model not available	Account access or model name	Supply a model you can access via --model
Script cannot run: not digitally signed	PowerShell execution policy	Use reviewed scripts\publish-wiki.cmd or session-scoped execution policy
fatal: not a git repository	Extracted ZIP contains no .git metadata	Use publishing script; it separately clones .wiki.git
Repository not found when publishing Wiki	GitHub Wiki not initialized or no permission	Enable Wiki and save its initial Home page
Old .wiki-publish-* checkout exists	Earlier publisher left a fixed-name directory	New script uses a unique temp checkout each time

The publishing script locates wiki/ relative to its own file location, not the PowerShell working directory, avoiding the earlier Missing wiki/Home.md problem.