Category "fatal-error"

What Should I do I am getting Fatal Error from this code?

Getting this error:- Fatal error: Uncaught PDOException: SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: NO) in C:\WEB-PROJECT

Matplotlib in C++

I would like to use matplotlib to plot an x,y graph. To do this, I downloaded "matplotlibcpp.h" from github : https://github.com/lava/matplotlib-cpp However, in

LINK : fatal error LNK1104: cannot open file '.obj'

I have a big problem with building a simple program. I am using many tutorials, instructions and I can't solve it. I edit the variable's path as follows: C