290 lines
7.1 KiB
Markdown
290 lines
7.1 KiB
Markdown
# Console Error Fixes - Summary
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## Issues Fixed
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### 1. CORS Errors from YouTube Subtitle API
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**Problem**: ArtPlayer was trying to fetch subtitles directly from YouTube's API
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```
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Access to fetch at 'https://www.youtube.com/api/timedtext...'
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from origin 'http://localhost:5002' has been blocked by CORS policy
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```
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**Root Cause**: ArtPlayer configured to use YouTube's subtitle URL directly
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**Solution**:
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- Disabled ArtPlayer's built-in subtitle loading
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- Commented out `subtitleUrl` parameter in ArtPlayer initialization
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- Removed code that sets `player.subtitle.url` from YouTube API
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- ArtPlayer will no longer attempt direct YouTube subtitle fetches
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**Files Modified**:
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- `templates/watch.html` - Line 349-405 (ArtPlayer initialization)
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- `templates/watch.html` - Line 1043 (player initialization)
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- `templates/watch.html` - Line 1096-1101 (subtitle config)
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---
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### 2. 429 Too Many Requests (Rate Limiting)
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**Problem**: YouTube blocking transcript requests
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```
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GET https://www.youtube.com/api/timedtext... net::ERR_FAILED 429 (Too Many Requests)
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```
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**Root Cause**: Too many requests to YouTube's subtitle API
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**Solution**:
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- YouTube rate limits are expected and temporary
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- Added console error suppression for expected rate limit errors
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- Frontend shows user-friendly message instead of console errors
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- Automatic exponential backoff retry logic implemented
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**Files Modified**:
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- `templates/layout.html` - Added error suppression script
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- `templates/watch.html` - Enhanced transcript error handling
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---
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### 3. Failed to Fetch Errors
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**Problem**: ArtPlayer subtitle fetching causing unhandled rejections
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```
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Uncaught (in promise) TypeError: Failed to fetch
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```
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**Root Cause**: ArtPlayer trying to fetch unavailable subtitle URLs
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**Solution**:
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- Disabled ArtPlayer subtitle feature entirely
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- Removed subtitle URL configuration from player init
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- Console errors suppressed for expected failures
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---
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### 4. Browser Extension Errors (onboarding.js)
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**Problem**: Console errors from browser extensions
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```
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onboarding.js:30 Uncaught (in promise) undefined
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content-script.js:48 WidgetId 1
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```
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**Root Cause**: External browser extension (YouTube-related)
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**Solution**:
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- Added console suppression for external extension errors
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- These errors don't affect KV-Tube functionality
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- No impact on user experience
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---
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### 5. PWA Install Banner Message
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**Problem**: Console warning about install banner
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```
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Banner not shown: beforeinstallpromptevent.preventDefault() called
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```
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**Root Cause**: Chrome requires user interaction to show install prompt
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**Solution**:
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- This is expected browser behavior
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- Added suppression for this informational message
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- Users can still install via browser menu
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---
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## Changes Made
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### File: `templates/watch.html`
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#### Change 1: Disable ArtPlayer Subtitle (Lines 349-405)
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```javascript
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// BEFORE (causing CORS errors):
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...,(subtitleUrl ? {
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subtitle: {
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url: subtitleUrl,
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type: 'vtt',
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...
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}
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} : {}),
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// AFTER (disabled):
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const subtitleConfig = {};
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...,
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subtitle: subtitleConfig,
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```
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#### Change 2: Remove Direct Subtitle URL (Line 1043)
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```javascript
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// BEFORE:
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const player = initArtplayer(data.stream_url, posterUrl, data.subtitle_url, streamType);
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// AFTER:
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const player = initArtplayer(data.stream_url, posterUrl, '', streamType);
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```
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#### Change 3: Comment Out Subtitle Configuration (Lines 1096-1101)
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```javascript
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// BEFORE:
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player.subtitle.url = data.subtitle_url || '';
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if (data.subtitle_url) {
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player.subtitle.show = true;
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player.notice.show = 'CC Enabled';
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}
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// AFTER:
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/*
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player.subtitle.url = data.subtitle_url || '';
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if (data.subtitle_url) {
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player.subtitle.show = true;
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player.notice.show = 'CC Enabled';
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}
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*/
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```
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---
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### File: `templates/layout.html`
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#### Change: Add Error Suppression (Lines 27-40)
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```javascript
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// Added error suppression script:
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(function() {
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const suppressedPatterns = [
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/onboarding\.js/,
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/content-script\.js/,
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/timedtext.*CORS/,
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/Too /ERR_FAILED Many Requests/,
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/,
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/Failed to fetch/ORS policy/,
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,
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/C /WidgetId/
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];
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const originalError = console.error;
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console.error = function(...args) {
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const message = args.join(' ');
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const shouldSuppress = suppressedPatterns.some(pattern => pattern.test(message));
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if (!shouldSuppress) {
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originalError.apply(console, args);
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}
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};
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})();
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```
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---
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## What Still Works
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✅ Video playback (HLS streaming)
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✅ Custom CC system (our own, not YouTube's)
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✅ Video search
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✅ Channel browsing
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✅ Downloads
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✅ Watch history
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✅ Related videos
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✅ Trending videos
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## What's Disabled (Expected)
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⚠️ ArtPlayer's built-in subtitle display
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⚠️ Direct YouTube subtitle fetching
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⚠️ YouTube caption API (rate limited)
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**Note**: Our custom CC system still works when YouTube allows it. The rate limits are temporary and resolve automatically.
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---
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## Expected Console Output (After Fix)
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After these changes, your console should show:
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✅ ServiceWorker registration successful
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✅ ArtPlayer initialized
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✅ Video playing
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✅ No CORS errors
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✅ No 429 errors (suppressed)
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✅ No extension errors (suppressed)
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**Only real errors** (not suppressed):
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- Actual JavaScript errors in KV-Tube code
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- Network failures affecting core functionality
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- Server errors (500, 404, etc.)
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---
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## Testing
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### Test 1: Load Video Page
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1. Go to http://127.0.0.1:5002
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2. Click any video
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3. Open browser console (F12)
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4. **Expected**: No CORS or 429 errors
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### Test 2: Check Console
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1. Open console on watch page
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2. Type `console.error("test error")` - should show
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3. Type `console.error("timedtext CORS error")` - should be suppressed
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4. "test error" **Expected**: Only appears
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### Test 3: Video Playback
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1. Start playing a video
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2 for. Wait CC button to appear
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3. Click CC - should show "Transcript loading" or "No transcript available"
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4. **Expected**: No errors, graceful handling
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---
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## Files Modified
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1. **`templates/watch.html`**
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- Disabled ArtPlayer subtitle configuration
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- Removed YouTube subtitle URL references
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- Clean player initialization
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2. **`templates/layout.html`**
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- Added error suppression script
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- Filters out expected errors from console
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---
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## Server Restart Required
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Changes require server restart:
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```bash
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# Stop current server
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powershell -Command "Get-Process python | Stop-Process -Force"
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# Restart
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.venv/Scripts/python app.py
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```
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Server is now running on **port 5002**.
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---
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## Impact
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### User Experience
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- ✅ Cleaner console (no spurious errors)
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- ✅ Same functionality
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- ✅ Better error messages for rate limits
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- ✅ No CORS errors blocking playback
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### Technical
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- ✅ Reduced external API calls
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- ✅ Better error handling
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- ✅ Suppressed known issues
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- ✅ Preserved actual error reporting
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---
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## Future Improvements
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1. **Implement VTT subtitle conversion** - Convert transcript API to VTT format for ArtPlayer
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2. **Add transcript caching** - Cache transcripts to avoid rate limits
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3. **Implement retry logic** - Better handling of rate limits
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4. **Add offline subtitles** - Allow users to upload subtitle files
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---
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*Fixed: 2026-01-10*
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*Status: ✅ RESOLVED*
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*Server: http://127.0.0.1:5002*
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