Abaqus - Error with *MANIFEST keyword

Hello, I am trying to run a set of multiple nonlinear load cases using the *MANIFEST keyword. When I run it, I receive the following error message:

"***ERROR: no set matching mesh index 0, class index 1 and type 1 was found."

Has anyone come across something similar or know what this means? It is interesting to note that when I run the models individually, no errors occur.

Thank you!

Abaqus