The error shows this:
[Error, Infinite loop detected. (flow:Checkpoint (node:Entry) --> flow:Checkpoint (node:Standard) --> flow:Checkpoint (node:Exit) --> flow:Main (node:Introduction) --> flow:Main (node:Onboarding) --> flow:Onboarding (node:Entry) --> flow:Onboarding (node:Standard) --> flow:Onboarding (node:Exit) --> flow:Main (node:Onboarding) --> flow:Checkpoint (node:Entry)). Flow: flow:Checkpoint | Node: node:Entry.
But the first Checkpoint and the 2nd Checkpoint are in different nodes, which doesn't create a loop