fix: remove redundant "/" in Gradio mount path to prevent double slash in URL

[clifford402]

Description

This PR fixes the issue where accessing the app resulted in URLs like (double slash), which caused front-end errors.
The fix is to set the path argument in gr.mount_gradio_app to an empty string ("") instead of "/".
This ensures all URLs are generated correctly with a single slash.

---

Code Diff

# ...existing code...
-    app = gr.mount_gradio_app(app, demo, path="/")
+    app = gr.mount_gradio_app(app, demo, path="")
# ...existing code...

---

After merging this PR, the app will no longer generate URLs with double slashes, and the front-end will work as expected.

[HenkieTenkie62]

It works! I did it online with the following command in the console:

sed -i 's|app = gr.mount_gradio_app(app, demo, path="/")|app = gr.mount_gradio_app(app, demo, path="")|' gradio_app.py

Make sure you run it in the right folder containing the gradio_app.py file:

root@9127afe2bc15:/app/Hunyuan3D-2# ls -al
total 224
drwxr-xr-x 1 root root 4096 Aug 19 07:59 .
drwxr-xr-x 1 root root 4096 Aug 18 14:58 ..
drwxr-xr-x 8 root root 4096 Aug 18 14:58 .git
-rw-r--r-- 1 root root 3441 Aug 18 14:58 .gitignore
-rw-r--r-- 1 root root 596 Aug 18 14:58 .readthedocs.yaml
-rw-r--r-- 1 root root 16993 Aug 18 14:58 LICENSE
-rw-r--r-- 1 root root 32065 Aug 18 14:58 NOTICE
-rw-r--r-- 1 root root 18798 Aug 18 14:58 README.md
-rw-r--r-- 1 root root 10231 Aug 18 14:58 README_ja_jp.md
-rw-r--r-- 1 root root 11719 Aug 18 14:58 README_zh_cn.md
-rw-r--r-- 1 root root 11066 Aug 18 14:58 api_server.py
drwxr-xr-x 8 root root 4096 Aug 18 14:58 assets
-rw-r--r-- 1 root root 13508 Aug 18 14:58 blender_addon.py
drwxr-xr-x 3 root root 4096 Aug 18 14:58 docs
drwxr-xr-x 2 root root 4096 Aug 18 14:58 examples
-rwxr-xr-x 1 root root 30987 Aug 19 07:59 gradio_app.py
drwxr-xr-x 5 root root 4096 Aug 19 08:26 gradio_cache
drwxr-xr-x 1 root root 4096 Aug 19 07:39 hy3dgen
-rw-r--r-- 1 root root 1555 Aug 18 14:58 minimal_demo.py
-rw-r--r-- 1 root root 805 Aug 18 14:58 minimal_vae_demo.py
-rw-r--r-- 1 root root 387 Aug 18 14:58 requirements.txt
-rw-r--r-- 1 root root 1625 Aug 18 14:58 setup.py
root@9127afe2bc15:/app/Hunyuan3D-2#