PLUMED Error: 'cannot find action named restraint-c5_4'

It seems that there is an error in the input to the PLUMED action PRINT with the label @4. The error message suggests that the action named 'restraint-c5_4' cannot be found. It provides a hint that the available actions in this ActionSet are 'ene', 'c1', and 'restraint-c1_5'.

To fix this error, you need to make sure that the action named 'restraint-c5_4' is defined and included in the input file. Double-check the spelling and syntax of the action name, and ensure that it is properly defined before using it in the PRINT action.