Started new job at startup and finished all the development environment setup started development it was going smooth for one week.all the created API were working fine on the next day morning without any changes API's were giving cors error.asked my senior what must be the problem he said bypass cors and figure out the problem after trying for 1hrs i couldn't figure out what was the problem but API's were back to normal without any changes. then after sometime same day in zoom call i asked what was the problem he said show me the error but I couldn't reproduced the same cors error he then lectured me for 1 hrs and after that he said that learn to solve by your own dont come with silly mistake like this to me.
I don't know what was the problem he even refused me show to what the problem was.

Our professor in our college deliberately makes a mistake in the program and ask people how it happened.
If someone solves it he complements them and it really makes them feel motivated.
I think he is the best professor 😊😊

Can anyone suggest good book for learning how an os works
Working of microprocessor
Unix
C
C++
book for complete software development form noob to expert

I just fucking hate android studio it takes 15-30 minute just to load on my machine . can't they just make the whole ide available through browser 😞