Anyone who can help me with this error please?
This looks like a node problem. Try running npm outdated to see if you have any packages that need updating.
You could also try npm clean-install.
See this thread on stackoverflow about this issue: https://stackoverflow.com/questions/59420896/npm-warn-deprecated-core-js2-6-11-core-js3-is-no-longer-maintained-and-not-r
Hope this helps. Let us know if this fixes the problem for you.