Knowledge Base > Troubleshooting > Working with code E015

Working with code E015

If you receive the output code E015, this means that an error occurred when Diffblue Cover tried to download the junit-platform-launcher artifact. This prevents Diffblue Cover from validating the created tests. There are two ways to solve this problem:

  • Please make sure an internet connection is available
  • Use the maven-surefire-plugin or add a dependency to junit-platform-launcher, as shown below: