It was working fine till morning. But now it is raising this error. Even when I am creating it from scratch. It is raising this error when I try to deploy using Azure Functions extension from VS code.

@Zeeshan Ahmad Abbasi , Welcome to Microsoft Q&A Platform! Thank you for bringing this to our attention. Based on the error message, we recommend clearing the Azure Functions extension cache in Visual Studio Code and attempting the deployment again. Here are the steps to clear the cache: Open Visual Studio Code. Press Ctrl + Shift + P (or Cmd + Shift + P on Mac) to open the Command Palette. Type Azure: Clear Cache and select it from the list. Restart Visual Studio Code. Attempt the deployment again. If the issue persists, please let us know, and we’ll assist you further.

I am trying to deploy my function to azure function app using VS code. But an error is raised. Following is the error raised: "Internal error: Expected value to be neither null nor undefined: newSiteName"

Accepted answer

Khadeer Ali 2,360 Reputation points Microsoft Vendor

2024-12-31T18:18:58.7333333+00:00
@Zeeshan Ahmad Abbasi ,

Welcome to Microsoft Q&A Platform!

Thank you for bringing this to our attention. Based on the error message, we recommend clearing the Azure Functions extension cache in Visual Studio Code and attempting the deployment again.

Here are the steps to clear the cache:

Open Visual Studio Code.

Press Ctrl + Shift + P (or Cmd + Shift + P on Mac) to open the Command Palette.

Type Azure: Clear Cache and select it from the list.

Restart Visual Studio Code.

Attempt the deployment again.

If the issue persists, please let us know, and we’ll assist you further.
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1 person found this answer helpful.
Zeeshan Ahmad Abbasi 35 Reputation points

2025-01-01T06:53:18.6433333+00:00

Hello, thank you for the help, but there is no option to clear cache using your method. I deleted all the files of VS code in the App Data folder previously, still the issue persists. Same issue is happening in my colleague's computer.

Matt C 56 Reputation points

2025-01-02T13:40:28.1233333+00:00

I'm also getting this error.. and like Zeeshan says, there's no 'Azure: Clear Cache' option like you suggested.

Khadeer Ali 2,360 Reputation points Microsoft Vendor

2025-01-02T17:27:35.36+00:00

Zeeshan Ahmad Abbasi,

I hope this message finds you well. I would like to apologize for the earlier guidance regarding clearing the cache in Visual Studio Code. The "Clear Cache" option I mentioned is not available, and I regret any inconvenience this may have caused.

Clear Cache option most likely available when we can install Azure Cache from the Market Place and could perform the operation. We could try alternate method to clear the cache.

To help resolve the issue you're facing, I have outlined the corrected steps below:

Clearing Cache in Visual Studio Code

Close Visual Studio Code.

Navigate to the cache folder for VS Code based on your operating system:
Windows: C:\Users\<YourUsername>\AppData\Roaming\Code Mac: ~/Library/Application Support/Code Linux: ~/.config/Code Delete the following folders if they exist: CachedData Cache Code Cache GPUCache

Restart Visual Studio Code.

Uninstall and Reinstall Extensions

Open the Extensions panel in VS Code (Ctrl + Shift + X or Cmd + Shift + X).

Locate the Azure Functions extension.

Right-click it and select Uninstall.

After uninstallation, reinstall the extension by searching for "Azure Functions" in the marketplace.

Re-login to Azure

Navigate to the Azure panel in Visual Studio Code.

Right-click your account name and select Sign Out.

Then click Sign In to Azure to reauthenticate.

Thank you for your understanding, and I truly appreciate your patience.

Zeeshan Ahmad Abbasi 35 Reputation points

2025-01-06T08:24:35.7033333+00:00

Hello Khadeer. Thanks a lot for the response. I had tried to clear all the data of visual studio code previously and had exactly done what you suggested here. It resolved the error for me.
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I am trying to deploy my function to azure function app using VS code. But an error is raised. Following is the error raised: "Internal error: Expected value to be neither null nor undefined: newSiteName"

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