Hi @Breeze and welcome to the forum!
I’m not entirely sure what is causing this error, but it looks like someone else had a similar issue! Here is some useful information: https://community.naturalcapitalalliance.org/t/errno-1-proj-proj-identify-cannot-find-proj-db/5352/5
Alternatively, when installing InVEST, did you install it for yourself or for all users? If the former, would you be able to try installing it for all users?
Finally, please review our posting guidelines, specifically the part about uploading your logfile.