Hi, i'm trying to run all my forms which includes a dropdown list and this one calls a qpr file, however, everytime i try to run any form it displays this error:

Thisform.refresh()
Error: 1
File '*****' does not exist.
Method: navrefresh
Line: 95

and after that:

File '*****' does not exist.

How can i fix this because this was working fine until yesterday, and i didn't do anything.
Note: instead of ***** goes the name of the file.