sciagent code + Gitea Actions CI/CD

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-30 09:38:30 +07:00
commit 688fac73e9
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+# Debug Network Error in Chat Assistant
+
+## Issue
+Frontend shows "Network error. Please check your connection." but backend logs show 200 OK.
+
+## Root Cause Analysis
+
+The backend is successfully processing requests (200 OK), but the frontend axios client is reporting a network error. This typically means:
+
+1. **CORS Issue**: Response is blocked by browser CORS policy
+2. **Response Format**: Response doesn't match expected format
+3. **Timeout**: Request takes too long (>30s)
+4. **Network Path**: Browser can't reach the backend URL
+
+## Debugging Steps
+
+### 1. Check Browser Console
+Open browser DevTools (F12) and check:
+- Console tab for error messages
+- Network tab to see the actual request/response
+- Look for CORS errors (red text)
+
+### 2. Check API URL
+The frontend should use:
+- **Local development**: `http://localhost:4402`
+- **Docker**: Should still use `http://localhost:4402` (browser makes request from host)
+
+### 3. Test API Directly
+```bash
+# Test from your machine (not Docker)
+curl -X POST http://localhost:4402/api/v1/chat \
+  -H "Content-Type: application/json" \
+  -d '{"message": "Hello"}'
+```
+
+### 4. Check CORS Headers
+The backend should return CORS headers. Check in browser Network tab:
+- `Access-Control-Allow-Origin: *`
+- `Access-Control-Allow-Methods: *`
+- `Access-Control-Allow-Headers: *`
+
+### 5. Check Response Format
+The backend returns:
+```json
+{
+  "message": "AI response text",
+  "model": "gemma3:270M",
+  "tokens_used": 150
+}
+```
+
+The frontend expects this format in `ChatResponse`.
+
+## Quick Fixes
+
+### Fix 1: Verify API URL
+Check what URL the frontend is using:
+1. Open browser console
+2. Look for: `API Client initialized with baseURL: ...`
+3. Should be: `http://localhost:4402`
+
+### Fix 2: Check CORS
+Backend has `allow_origins=["*"]` which should work, but verify:
+1. Check browser Network tab
+2. Look for OPTIONS preflight request
+3. Should return 200 OK
+
+### Fix 3: Test with curl
+```bash
+curl -v -X POST http://localhost:4402/api/v1/chat \
+  -H "Content-Type: application/json" \
+  -H "Origin: http://localhost:8081" \
+  -d '{"message": "test"}'
+```
+
+### Fix 4: Check Response Time
+The backend log shows 6.3 seconds. If axios timeout is shorter, it will fail. Current timeout is 30s, so should be fine.
+
+## Expected Behavior
+
+1. Browser makes POST to `http://localhost:4402/api/v1/chat`
+2. Backend processes request (6-7 seconds for Ollama)
+3. Backend returns 200 OK with JSON response
+4. Frontend receives response and displays it
+
+## Current Status
+
+✅ Backend: Working (200 OK)
+❌ Frontend: Network error
+🔍 Need to check: Browser console, Network tab, CORS headers
+
+## Next Steps
+
+1. Open browser DevTools
+2. Go to Network tab
+3. Make a chat request
+4. Check the request details:
+   - URL
+   - Status code
+   - Response headers
+   - Response body
+5. Check Console tab for errors