Hmmm, that is interesting… If this is the case, then how do you explain, that all of the other projects stopped working with the same error? Projects, that were already in production, working OK for many months.
I’m not saying it is impossible that there is a problem in my code, but everything was working until this last update.
You also saw, that to get this specific compilation code all you have to have in the code is a mention of one of the data types in time.h. To me this means that there is a problem with the time.h not recognized properly, just as it is mentioned in the linked thread.
I was happy to see that thread offering an explanation (which sounded reasonable), but I found my :\Users\your_user.platformio\lib folder empty. I wonder if this is normal?