Uploading nested csv giving error- 0: object mapping for [comments] tried to parse field [comments] as object, but found a concrete value

[anaya]

Hi! I am trying to upload some data to elastic through a csv file which has multiple fields, out of which one is a nested field.
The mapping i defined is as follows-

"comments": {
"type": "nested",
"properties":{
"name":{
"type":"keyword"},
"rating":{
"type":"long"}
}

And the csv looks like-

The error I'm getting is-
0: object mapping for [comments] tried to parse field [comments] as object, but found a concrete value

Am i using the wrong format somewhere? Fairly new to elastic, any help would be greatly appreciated

[spinscale (Alexander Reelsen)]

How do you try to upload this? Via the csv file import? My high level guess is, that your JSON is treated as a string and thus this is failing.