Error 601: No Corresponding Activity Found in PDF App

I Have made a PDF viewer app with admin panel. Files are storing succesfully but the main problem is when I click on that File in List , text and Image list It shows an alert
Error 601: No Corresponding Activity Found
Here Are the blocks:-

2 4

welcome @Mr_Developer to the community.

can you tell or show activity stater designer property or have you made other required blocks for activity stater

Hi @Mr_Developer, welcome to the community!
1- You need to set the action property to android.intent.action.VIEW i don’t find you setting it in any place ?Or you’ve set ti in the designer?
2- Data uri must be a content uri and not the file name.You need to change it.You cna use this extension to get uri from the file name: