Compile (web): Object reference not set to an instance of an object.

Question

Hi there.

I have an ASP.NET project with VB.net in visual studios 2008, and I migrated it to visual studios 2019, and I have an error that won't let me compile. I am using crystal report and it gives me an error when reaching the reports folder.

The error in the output is as follows:

1>C:\Users\dark\Desktop\projecto\wwwproject\report\arrays\arrays.rpt(1): 
Compile (web): Object reference not set to an instance of an object.

The error is given to me in a report file with an .rpt extension on line 1 and says: Object reference not set as an instance of an object.

First of all, Thanks.