Fix headless issues.

closes #2024

video_creation/screenshot_downloader.py

@@ -74,7 +74,7 @@ def get_screenshots_of_reddit_posts(reddit_object: dict, screenshot_num: int):
         print_substep("Launching Headless Browser...")
 
         browser = p.chromium.launch(
-            headless=False
+            headless=True
         )  # headless=False will show the browser for debugging purposes
         # Device scale factor (or dsf for short) allows us to increase the resolution of the screenshots
         # When the dsf is 1, the width of the screenshot is 600 pixels
@@ -86,6 +86,7 @@ def get_screenshots_of_reddit_posts(reddit_object: dict, screenshot_num: int):
             color_scheme="dark",
             viewport=ViewportSize(width=W, height=H),
             device_scale_factor=dsf,
+            user_agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36",
         )
         cookies = json.load(cookie_file)
         cookie_file.close()