Catalog 500 error when editing harvest source

[FuhuXia]

On production Catalog, when editing a harvest source, Save button will generate a 500 error about json and solr.

500 Internal Server Error
The server has either erred or is incapable of performing the requested operation.

Unable to update search index.("Solr returned an error: (u'Solr responded with an error (HTTP 400): [Reason: Error parsing JSON field value. Unexpected OBJECT_START at [3285], field=status]',)",)

How to reproduce

1. Go to https://admin-catalog-next.data.gov/harvest/edit/gsa-json
2. Save

Expected behavior

200 response.

Actual behavior

500 error.

Background

Error on the solr side.

[FuhuXia]

Can be closed. Duplicate of #2866.