Hi @santhosh_S_R ,
Thank you for reaching out!
This seems to be a temporary issue. Please try the following steps:
- Refresh the AI Studio page or reopen it in a new browser window.
- Clear browser cache and cookies, then sign in again.
Let us know if the issue still persists!
Having these exact same issue. Clearing browser history/cookie/cache, using a different browser etc.. nothing seems to work. Stuck with a black preview screen that never seems to render my app.
Hi Mrinal,
Thank you for the suggestions. I have already completed all troubleshooting steps (refreshing, clearing cache/cookies, and signing in), but the app preview is still not loading. Another user in the thread is experiencing the same persistent issue.
Could you please provide alternative solutions?
Best regards,
Santhosh S R
Maybe this could help:
Hello @santhosh_S_R, @Steven_Bell ,
Thank you for bringing this to our attention. We truly appreciate you flagging this issue.
We have escalated this issue to the concerned team.
Gemini flash black screen preview, not showing preview, even after exporting code still blank black screen. I used it on Google studio
fixing preview loading blank error for some issues.
Story –> [ I attempted several solutions suggested in this thread, but none were successful. Recently, I also encountered an error where Chrome failed to load Crew AI documentation. While troubleshooting, I managed to resolve both issues by resetting my network configuration using the commands below. I’m sharing them here in hopes that they help others.]
Step1: clear all the browser cookies for [ All time]
Step 2: //Reset your network configuration. //
Here is your complete **“Troubleshooting Command Plate”** for Ubuntu network issues. Save this list. It covers **Finding** the connection, **Fixing** the blockage (DNS/IPv6), and **Resetting** if things go wrong.
### 
Ubuntu Network Repair Plate
Replace `“JioPhone”` with whatever your Wi-Fi name is at the time.
#### 1. Identification (Start Here)
| **Goal** | **Command** |
| — | — |
| **Find your Wi-Fi Name**
*(Needed for all other commands)* | `nmcli connection show --active` |
| **Check Internet Status**
*(See if DNS is failing)* | `ping -c 3 [google. com] |
-–
#### 2. The Fix (Bypass Blocks & Errors)
*Use these when you see “Site can’t be reached” or “Address Unreachable”.*
| **Goal** | **Command** |
| — | — |
| **Step A: Set Google DNS**
*(Forces laptop to use Google’s phonebook)* | `sudo nmcli connection modify “JioPhone” ipv4.dns “8.8.8.8 8.8.4.4”` |
| **Step B: Ignore ISP DNS**
*(Stops router from overriding Google)* | `sudo nmcli connection modify “JioPhone” ipv4.ignore-auto-dns yes` |
| **Step C: Disable IPv6**
*(Fixes “Address Unreachable” on Jio/Airtel)* | `sudo nmcli connection modify “JioPhone” ipv6.method “disabled”` |
| **Step D: Apply Changes**
*(Restart connection to make it work)* | `sudo nmcli connection up “JioPhone”` |
-–
#### 3. Verification (Check Your Work)
| **Goal** | **Command** |
| — | — |
| **Check current DNS**
*(Should see 8.8.8.8)* | `resolvectl status | grep “DNS Servers”` |
-–
#### 4. The Reset (Emergency Undo)
*Use these only if the internet completely stops working after the fix.*
| **Goal** | **Command** |
| — | — |
| **Remove Custom DNS** | `sudo nmcli connection modify “JioPhone” ipv4.dns “”` |
| **Restore ISP Auto-DNS** | `sudo nmcli connection modify “JioPhone” ipv4.ignore-auto-dns no` |
| **Re-enable IPv6** | `sudo nmcli connection modify “JioPhone” ipv6.method “auto”` |
| **Restart Connection** | `sudo nmcli connection up “JioPhone”` |
I’ve verified for me there is no network problem, the screen is also not black, I see the app.
However the chat is blocked, even when I press the “reset chat“ at the top right, even when i open the project on a completely different pc in incognito mode (to make sure it has nothing to do with local cookies, cache,etc). I even tried connecting with vpn to new-york.
Every time I open ai studio, that same chat (even after reset), re-appears.
And every request ends up in “An internal error occurred“
And even when I try to manually code in the code panel on the right, the app does not change in the preview pane. Not even if I press app refresh “Reload the app“.
So it looks like both , the chat and the code editor/preview are stuck on the server (cached maybe?). It remains the same app rendering, even when the files are changed manually → this indicates thee preview part is cached somehow on the serverside, and I suspect this is the root cause → the caching mechanism does not get refreshed with new data.
I also see no way to contact google about this issue, it started 12h ago.
When i look at the past forum posts about the same error, there are a lot of solutions posted, but I think they all were a coincidence → the server side was fixed coincidently at the same time the user did many actions. Therfore is was not the user actions thaat solved the problem, but rather the time that passed…
