How to fix error rendering macro 'content-by-user'?

[Lamer Morales]

Error rendering macro 'content-by-user' : null

[Nic Brough -Adaptavist-]

You'll need to read your log file for the exact detail.  At a guess though, you've given the macro an invalid user, or none at all.

[Lamer Morales]

Thank you for your answer sir, actually the user is existing and the content by user macro is working fine with other users. What are the other options I can try?

[Nic Brough -Adaptavist-]

Reading the log file.