Ideal approach is the developers resolve the conflict themselves :).
But that said, if a developer is a beginner, then they will find it hard to resolve conflicts. So in that case the tech lead can resolve the conflicts. With more experience the developer will be able to resolve the conflicts by themselves :)
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
Ideal approach is the developers resolve the conflict themselves :).
But that said, if a developer is a beginner, then they will find it hard to resolve conflicts. So in that case the tech lead can resolve the conflicts. With more experience the developer will be able to resolve the conflicts by themselves :)