Template Library | Edit template showing error in console when duplicate template is present

Replication Steps :

1) Open the dashboard
2) Click on create template
3) Create the template
4) Traverse to template library via dashboard
5) Edit the with existing template name(template name which is already in template).
6)Click on update template
7)Template is not updated ans showing error in console
PFA

Expected Result :If template is already present then while editing the template with same name system should show error message "Template name already exists"