the application "install macOS Big Sur" has been blocked

I tried to update to Big Sur, the download completed, but got an error:

the application "install macOS Big Sur" has been blocked
Contact your administrator for more information

I was using the iMac with administrator account, any solutions ?
Same issue
Same issue, hope we get a feedback soon
Same issue
Same Error too
Same issue.
Same issue, hope we get a feedback soon.
Same Issue
same issue
I find the way to fix this problem,do as follows:

➜ MacOS launchctl list | egrep bigsur
8510 -15 com.hjuutilainen.bigsurblocker
➜ MacOS launchctl remove com.hjuutilainen.bigsurblocker
➜ MacOS top | grep big  

then update, it works for me
follow this, it works for me.
https://github.com/hjuutilainen/bigsurblocker
the application "install macOS Big Sur" has been blocked
 
 
Q