Cloudant Search field was indexed without position data; cannot run PhraseQuery

I have the following Cloudant search index

"indexes": {
    "search-cloud": {
        "analyzer": "standard",
        "index": "function(doc) {

            if (doc.name) {
                index("keywords", doc.name);
                index("name", doc.name, {
                    "store": true,
                    "index": false
                });
            }

            if (doc.type === "file" && doc.keywords) {
                index("keywords", doc.keywords);
            }

        }"
    }
}

For some reason when I search for specific phrases, I get an error:

Search failed: field "keywords" was indexed without position data; cannot run PhraseQuery (term=FIRSTWORD)

So If I search for FIRSTWORD SECONDWORD, it looks like I am getting an error on the first word.

NOTE: This does not happen to every search phrase I do.

Does anyone know why this would be happening?

doc.name and doc.keywords are just string.

doc.name is usually something like "2004/04/14 John Doe 1234 Document Folder"

doc.keywords is usually something random like "testing this again"

And the reason why I am storing name and keywords under the keywords index is because I want anyone to be able to search keywords or name by just typing on string value. Let me know if this is not the best practice.

Solution

Likely the problem is that some of your documents contain a keywords field with string values, while other documents contain a keywords field with a different type, probably an array. I believe that this scenario would result in the error that you received. Can you double check that all of the values for your keywords fields are, in fact, strings?