I try to use Azure Dev Spaces for an existing ASP.NET Core project that is already deployed to Azure Kubernetes Service (AKS).

I followed this guide to enable Azure Dev Spaces for my project. However, when I try to debug my project using Azure Dev Spaces, I get the following error:

Enabling debugging...  There is no more space available for file synchronization. Please remove unused spaces by running 'azds down', reduce the size of your workspace, and retry later.

Running azds down doesn't solve my issue:

PS D:\sources\git\> azds down    
Identifying the dev space workload 'xxx'...
'myproject' does not identify any dev space workload.

If I try to invoke azds up in the command line, I also get an error:

Using dev space 'myresourcegroup' with target 'mycluster'
Synchronizing files...Oops... An unexpected error has occurred. A report of the error will be sent to Microsoft. Please include the following Client Request ID when contacting support: 5696f5ea-.....

Any ideas?