Incorrect permissions on /usr/lib/po1kit-agent-helper-1(needs to be setuid root)

I encounter this error after a failed updating on kali linux. It said “Incorrect permissions on /usr/lib/po1kit-agent-helper-1(needs to be setuid root)” and there is no placeholder for password. It took me half an hour to find out the solution here.

 # sudo chmod +s /usr/lib/policykit-1/polkit-agent-helper-1 
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