Unexpected token ” + token + ” after ” + fieldName + ” – Elasticsearch Error How To Solve Related Issues



Unexpected token ” + token + ” after ” + fieldName + ” – Elasticsearch Error How To Solve Related Issues

Updated: July-20

Elasticsearch Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up  which can resolve issues causing many errors 

 

This guide will help you check for common problems that cause the log “unexpected token ” + token + ” after ” + fieldName + “” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: search.


Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to discover the cause of many errors and provides suitable actionable recommendations (free tool that requires no installation). 

Log Context

Log”unexpected token [” + token + “] after [” + fieldName + “]”classname  is SuggestBuilder.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (suggestionName == null) {
  throw new IllegalArgumentException("suggestion must have name");
  }
  suggestBuilder.addSuggestion(suggestionName; SuggestionBuilder.fromXContent(parser));
  } else {
  throw new ParsingException(parser.getTokenLocation(); "unexpected token [" + token + "] after [" + fieldName + "]");
  }
  }
  return suggestBuilder;
  }

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 ElasticSearch/npm: elasticdump: Unexpected token error during dumping of response data -views 679 

Escape colon in Reactive Search field name -views   125,score 2



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