I have recently re-installed Mathematica 11.2.0 on my machine due to its slow performance and I have encountered a bug (?). From this link it appears to be an old bug on MMA 10. I somewhat have an idea from what the problem is generated. Basically, when I start Mathematica and evaluate a command of the form $"Comand Here" (ex:$Version or $LicenseID) it works perfectly, however, after evaluating this command, when I close the notebook, I get the error:
The front end encountered an error while processing a "NotebookPredictions" packet.
This appears only on this circumstance.
I want to add that this did not happen on my previous install, and I already tried re-installing the software but this problem keeps on persisting. I do not understand why.