Unable to create app catalog site

[MS365shivam94bosch]

I get this error message when I try to create an App Catalog Site from the SharePoint Admin center

Sorry, something went wrong

Updates are currently disallowed on GET requests.  To allow updates on a GET, set the 'AllowUnsafeUpdates' property on SPWeb.

Correlation ID: daf8639f-70db-b000-5ab1-28b48fed17a5

Date and Time: 7/8/2020 12:43:18 AM

[#2]

Hi @MS365shivam94bosch,

Try to create one site from classic site collection page with following url

<SharePoint admin siteurl>/_layouts/15/online/SiteCollections.aspx

Then try to create the new app catalog again.

This solution worked for me. Hope it works for you too.

[#3]

@MS365shivam94bosch if the suggestion above does not work, it may be best to create a support request with Microsoft