efa2c7de-0fc5-4ef4-989d-9f47b04054f7
Hi @liuhongtao , welcome to the Atlassian Community and thanks for your post.
I was unable to translate the image you have uploaded but, typically, you would get this error if the site name you want to use is not available. Please try adding a number or something after this text -
personalprojectryan1
personalprojectryan-2025
to see if it will let you create a site with one of these names instead.
Best wishes
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