Can anyone help me about errors of Process Macro multiple mediator analysis with model 4?

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Cristian Ramos-Vera

There you put that you cannot find the file, maybe it is not in an accessible format for PROCESS

Regina Wittstock-Lang

PROCESS only shows me these errors for one group from the data set. When I add the missing values I get these error messages. If I remove the missing values, the error is gone. What can be there?