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Error message in Macbook air

I installed PsychoPy3 in my MacBook Air.
Then when I try to open it the following error message appears on the screen:

** “PsychoPy3” cannot be opened because the developer cannot be verified.*
macOS cannot verify that this app is free from malware.
Safari downloaded this file today at 12:15 from** .

How can I fix this?


Try to open it again, then go to System preferences -> Security, and you should see something in the lower half that repeats that warning but has an “open anyway” button. Should only need to do it once.