SyntaxError: Unexpected character

[levenecav]

Hello!
Gives an error when generated:
No parser and no filepath given, using 'babel' the parser now but this will throw an error in the future. Please specify a parser or a filepath so one can be inferred. SyntaxError: Unexpected character '«'

There is such a code in JSON:
"GetPricing«Restrictions»": { "type": "object", "properties": { "id": { "type": "integer", "format": "int64" }, "name": { "type": "string" }, "values": { "$ref": "#/definitions/Restrictions" } }, "title": "GetPricing«Restrictions»" },

If I remove it, I get this error:
No parser and no filepath given, using 'babel' the parser now but this will throw an error in the future. Please specify a parser or a filepath so one can be inferred. SyntaxError: Unexpected token, expected "," (2:3592)
But on the second line is this:
"swagger": "2.0",

What is the reason?

[yayoc]

I guess that prettier warns the message.
https://github.com/prettier/prettier/blob/91c20f7fbe22f68480820fcf322e7e099b22d82e/src/main/options.js#L41

What's parser are you using for prettier?
Also, It would be great if you can share the swagger to reproduce it.