The MplusAutomation package leverages the flexibility of the R language to automate latent variable model estimation and interpretation using Mplus, a powerful latent variable modeling program developed by Muthen and Muthen (www.statmodel.com). Specifically, MplusAutomation provides routines for creating related groups of models, running batches of models, and extracting and tabulating model parameters and fit statistics.
So Mplus is estimating the model and giving the message of "THE MODEL ESTIMATION TERMINATED NORMALLY" and the Mplusautomation is reading this but it is not reading the error/warning messages that are before it. Below you will see a screenshot of the issue.
Same thing here, the following message is not returned by mplusModeler and cannot be found in mplusObject[["results"]][["warnings"]] nor mplusObject[["results"]][["errors"]]
OlivierPDS
commented
1 year ago 
So Mplus is estimating the model and giving the message of "THE MODEL ESTIMATION TERMINATED NORMALLY" and the Mplusautomation is reading this but it is not reading the error/warning messages that are before it. Below you will see a screenshot of the issue.