#97 Handling Duplicate Key Error | Error Handling in Express | A Complete NODE JS Course

In this lecture we are going to handle mongoose duplicate key error which is thrown when to try to use same value for a unique field which already exist for some other record. ASP.NET Core GitHub Repo: https://github.com/manojjha86/ASP.NET-Core-mvc NODE JS Course GitHub Repo: https://github.com/manojjha86/NODE-JS