Please format your code using </> icon as explained in this guide. It will make your post more readable.
Or use markdown style like:
```
CODE
```
It sounds like you are trying to send a weird doc type or that you already created it: bebf52d2-7d9d-4b4b-a31b-3779dc9d1c8a.
Run a GET application-2018.01.14/_mapping and see what you have yet.
May be a wrong index template.