While running the program on mu laptop the file doesn't opened... Why???

Answer 1

Windows

Answer 2

Either the laptop is weak, or the Internet does not pull and maybe does not support, well, probably you have the old version !

Answer 3

in which system do you try to do it?
in case Linux - be certain that you gave the right access rights,
in Windows test ACL & Politics

Answer 4

show your code for opening file and using it after opening

Answer 5

But I have installed it recently

Answer 6

ok