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Can not write a field name, expecting a value
com.fasterxml.jackson.core.JsonGenerationException: Can not write a field name, expecting a value	at com.fasterxml.jackson.core.JsonGenerator._reportError(JsonGenerator.java:1886)	at com.fasterxml.jackson.core.json.UTF8JsonGenerator.writeFieldName(UTF8JsonGenerator.java:235)	at org.elasticsearch.common.xcontent.json.JsonXContentGenerator.writeFieldName(JsonXContentGenerator.java:152)	at org.elasticsearch.common.xcontent.XContentBuilder.field(XContentBuilder.java:264)	at org.elasticsearch.common.xcontent.XContentBuilder.field(XContentBuilder.java:255)	at org.elasticsearch.common.xcontent.XContentBuilder.startObject(XContentBuilder.java:169)	at org.elasticsearch.action.ActionWriteResponse$ShardInfo.toXContent(ActionWriteResponse.java:147)	at org.elasticsearch.common.Strings.toString(Strings.java:1103)	at org.elasticsearch.common.Strings.toString(Strings.java:1089)	at org.elasticsearch.action.ActionWriteResponse$ShardInfo.toString(ActionWriteResponse.java:164)	at java.lang.String.valueOf(String.java:2982)	at java.lang.StringBuilder.append(StringBuilder.java:131)	at org.elasticsearch.action.index.IndexResponse.toString(IndexResponse.java:118)	at com.hophman.onlineshop.behavior.impex.DefaultProductImporter.importCSV(DefaultProductImporter.java:69)	at OnlineShopApplication.main(OnlineShopApplication.java:13)