GraphQL error: Cannot return null for non-nullable field Mutation.projectCreate

created at 08-02-2021 views: 18
  1. 1. Delete all files in C:\Users\admin\AppData\Roaming\npm-cache, the path may be different for each computer,
  2. In short, under AppData\Roaming\npm-cache
  3. Execute npm uninstall vue-cli -g from the command line to uninstall vue
  4. Execute npm install -g @vue/cli from the command line to install vue
  5. Re-execute the vue ui, create the project, no more errors
created at:08-02-2021
edited at: 08-02-2021: