**Questions:-**1)I am trying to handle all exception at once in a single text file and i made a custom activity but error occurs that expression does not produce value but the same code is working perfectly in visual studio.
2) i have also tried using streamwriter classes to make a single exception and the code i used is below:
In the assign activity- streamwriter sw=new streamwriter(“path”,true)
then in message box- sw.writeline(ex.tostring) and here it says expression does not produce value
and i have tried multiple ways of using streamwriter but it seems doesn’t working here i don’t know why but the same thing working perfectly in visual studio.
**3)**File.AppendAllText also not working.
So i think uipath system.IO library is not working properly so please update it or if i made any mistake then please give me the solution.