Anywhere option is not available in Apps downloaded from in system preferences !

Hello there,

I'm using M1 macOS BigSur MacBook Air and tried "sudo spctl –master-disable" in terminal but i got the below response ?

Sravans-Air ~ % sudo spctl--master-disable.
sudo: /etc/sudoers is world writable sudo: no valid sudoers sources found, quitting sudo: error initializing audit plugin sudoers_audit Sravans-Air ~ % 

how do I resolve this and be able to download apps from the browser? Thanks for your help!

Anywhere option is not available in Apps downloaded from in system preferences !
 
 
Q