8.4 KiB
Quick Fixes - Top 11 Issues & Solutions
Common problems with 1-minute solutions.
#1: "Cannot connect to server"
Symptom: Browser shows error "Cannot connect to server" or "Unable to reach API"
Cause: Frontend can't reach API
Solution (1 minute):
# Step 1: Check if API is running
docker ps | grep api
# Step 2: Verify port 5055 is accessible
curl http://localhost:5055/health
# Expected output: {"status":"ok"}
# If that doesn't work:
# Step 3: Restart services
docker compose restart
# Step 4: Try again
# Open http://localhost:8502 in browser
If still broken:
- Check
API_URLin .env (should match your frontend URL) - See Connection Issues
#2: "Invalid API key" or "Models not showing"
Symptom: Settings → Models shows "No models available"
Cause: API key missing, wrong, or not set
Solution (1 minute):
# Step 1: Check your .env has API key
cat .env | grep OPENAI_API_KEY
# Step 2: Verify it's correct (from https://platform.openai.com/api-keys)
# Should look like: sk-proj-xxx...
# Step 3: Restart services
docker compose restart api
# Step 4: Wait 10 seconds, then refresh browser
# Go to Settings → Models
# If still no models:
# Check logs for error
docker compose logs api | grep -i "api key\|error"
If still broken:
- Make sure key has no extra spaces
- Generate a fresh key from provider dashboard
- See AI & Chat Issues
#3: "Port X already in use"
Symptom: Docker error "Port 8502 is already allocated"
Cause: Another service using that port
Solution (1 minute):
# Option 1: Stop the other service
# Find what's using port 8502
lsof -i :8502
# Kill it or close the app
# Option 2: Use different port
# Edit docker-compose.yml
# Change: - "8502:8502"
# To: - "8503:8502"
# Then restart
docker compose restart
# Access at: http://localhost:8503
#4: "Cannot process file" or "Unsupported format"
Symptom: Upload fails or says "File format not supported"
Cause: File type not supported or too large
Solution (1 minute):
# Check if file format is supported:
# ✓ PDF, DOCX, PPTX, XLSX (documents)
# ✓ MP3, WAV, M4A (audio)
# ✓ MP4, AVI, MOV (video)
# ✓ URLs/web links
# ✗ Pure images (.jpg without OCR)
# ✗ Files > 100MB
# Try these:
# - Convert to PDF if possible
# - Split large files
# - Try uploading again
#5: "Chat is very slow"
Symptom: Chat responses take minutes or timeout
Cause: Slow AI provider, large context, or overloaded system
Solution (1 minute):
# Step 1: Check which model you're using
# Settings → Models
# Note the model name
# Step 2: Try a cheaper/faster model
# OpenAI: Switch to gpt-4o-mini (10x cheaper, slightly faster)
# Anthropic: Switch to claude-3-5-haiku (fastest)
# Groq: Use any model (ultra-fast)
# Step 3: Reduce context
# Chat: Select fewer sources
# Use "Summary Only" instead of "Full Content"
# Step 4: Check if API is overloaded
docker stats
# Look at CPU/memory usage
For deep dive: See AI & Chat Issues
#6: "Chat gives bad responses"
Symptom: AI responses are generic, wrong, or irrelevant
Cause: Bad context, vague question, or wrong model
Solution (1 minute):
# Step 1: Make sure sources are in context
# Click "Select Sources" in Chat
# Verify relevant sources are checked and set to "Full Content"
# Step 2: Ask a specific question
# Bad: "What do you think?"
# Good: "Based on the paper's methodology section, what are the 3 main limitations?"
# Step 3: Try a more powerful model
# OpenAI: Use gpt-4o (better reasoning)
# Anthropic: Use claude-3-5-sonnet (best reasoning)
# Step 4: Check citations
# Click citations to verify AI actually saw those sources
For detailed help: See Chat Effectively
#7: "Search returns nothing"
Symptom: Search shows 0 results even though content exists
Cause: Wrong search type or poor query
Solution (1 minute):
# Try a different search type:
# If you searched with KEYWORDS:
# Try VECTOR SEARCH instead
# (Concept-based, not keyword-based)
# If you searched for CONCEPTS:
# Try TEXT SEARCH instead
# (Look for specific words in your query)
# Try simpler search:
# Instead of: "How do transformers work in neural networks?"
# Try: "transformers" or "neural networks"
# Check sources are processed:
# Go to notebook
# All sources should show green "Ready" status
For detailed help: See Search Effectively
#8: "Podcast generation failed"
Symptom: "Podcast generation failed" error
Cause: Insufficient content, API quota, or network issue
Solution (1 minute):
# Step 1: Make sure you have content
# Select at least 1-2 sources
# Avoid single-sentence sources
# Step 2: Try again
# Sometimes it's a temporary API issue
# Wait 30 seconds and retry
# Step 3: Check your TTS provider has quota
# OpenAI: Check account has credits
# ElevenLabs: Check monthly quota
# Google: Check API quota
# Step 4: Try different TTS provider
# In podcast generation, choose "Google" or "Local"
# instead of "ElevenLabs"
For detailed help: See FAQ
#9: "Services won't start" or Docker error
Symptom: Docker error when running docker compose up
Cause: Corrupt configuration, permission issue, or resource issue
Solution (1 minute):
# Step 1: Check logs
docker compose logs
# Step 2: Try restart
docker compose restart
# Step 3: If that fails, rebuild
docker compose down
docker compose up --build
# Step 4: Check disk space
df -h
# Need at least 5GB free
# Step 5: Check Docker has enough memory
# Docker settings → Resources → Memory: 4GB+
#10: "Database says 'too many connections'"
Symptom: Error about database connections
Cause: Too many concurrent operations
Solution (1 minute):
# In .env, reduce concurrency:
SURREAL_COMMANDS_MAX_TASKS=2
# Then restart:
docker compose restart
# This makes it slower but more stable
#11: Slow Startup or Download Timeouts (China/Slow Networks)
Symptom: Container crashes on startup, worker enters FATAL state, or pip/uv downloads fail
Cause: Slow network or restricted access to Python package repositories
Solution:
Increase Download Timeout
# In docker-compose.yml environment:
environment:
- UV_HTTP_TIMEOUT=600 # 10 minutes (default is 30s)
Use Chinese Mirrors (if in China)
environment:
- UV_HTTP_TIMEOUT=600
- UV_INDEX_URL=https://pypi.tuna.tsinghua.edu.cn/simple
- PIP_INDEX_URL=https://pypi.tuna.tsinghua.edu.cn/simple
Alternative Chinese mirrors:
- Tsinghua:
https://pypi.tuna.tsinghua.edu.cn/simple - Aliyun:
https://mirrors.aliyun.com/pypi/simple/ - Huawei:
https://repo.huaweicloud.com/repository/pypi/simple
Note: First startup may take several minutes while dependencies download. Subsequent starts will be faster.
Quick Troubleshooting Checklist
When something breaks:
- Restart services:
docker compose restart - Check logs:
docker compose logs - Verify connectivity:
curl http://localhost:5055/health - Check .env: API keys set? API_URL correct?
- Check resources:
docker stats(CPU/memory) - Clear cache:
docker system prune(free space) - Rebuild if needed:
docker compose up --build
Nuclear Options (Last Resort)
Completely reset (will lose all data in Docker):
docker compose down -v
docker compose up --build
Reset to defaults:
# Backup your .env first!
cp .env .env.backup
# Reset to example
cp .env.example .env
# Edit with your API keys
# Restart
docker compose up
Prevention Tips
- Keep backups — Export your notebooks regularly
- Monitor logs — Check
docker compose logsperiodically - Update regularly — Pull latest image:
docker pull lfnovo/open_notebook:latest - Document changes — Keep notes on what you configured
- Test after updates — Verify everything works
Still Stuck?
- Look up your exact error in Troubleshooting Index
- Check the FAQ in FAQ
- Check logs:
docker compose logs | head -50 - Ask for help: Discord or GitHub Issues