SNAPHU installation "man" error

I am trying to install SNAPHU on my mac osx Big Sur. When I enter the src folder using terminal and type “sudo make install” it shows the man folder error.
I even updated the make file directory by adding “/man1” to it still it shows this error.
I am not that good in linux, please help me it’s urgent. I am following that SNAPHU installation thread by @muddasirshah , created the man1 folder and still have no idea what’s going on. Please please please guide me

3 posts were merged into an existing topic: SNAPHU installation on Mac Big Sur ZSH terminal