ERROR! Session/line number was not unique in database

Hi everyone! I am currently running a jupyter lab server and when I get to the cell number 3 I run the 4th and it says also number 3 and it does not output anything. When I run the mislabeled cell 4 again, I get “ERROR! Session/line number was not unique in database. History logging moved to new session 768”

This is driving me crasy, I tried killing all jupyter processes and nothing, also, there is a jupyter lab I cannot kill that always appears when I run “jupyter lab list”.

Anyone can help me? The worst part is that I want to do a rather simple thing but this is not letting me do it!