Required parameter 't' must be provided. Add a current Unix timestamp in seconds to your URL (e.g., ?t=1234567890). The timestamp must be up-to-date.
Generate a fresh timestamp:
Shell:
```bash
date +%s
```
Python:
```python
import time
int(time.time())
```
JavaScript/Node.js:
```javascript
Math.floor(Date.now() / 1000)
```