Github user tonysun83 commented on the issue:
https://github.com/apache/couchdb-couch/pull/229
Moved the messages to the lower level again, so the new and hopefully final
format:
```
{
"rows": [
{
"key": null,
"value": {
"error": "builtin_reduce_error",
"reason": "The _sum function requires that map values be
numbers, arrays of numbers, or objects. Objects cannot be mixed with other data
structures. Objects can be arbitrarily nested, provided that the values for all
fields are themselves numbers, arrays of numbers, or objects.",
"caused_by": [
{
"a": 1
},
{
"a": 2
},
{
"a": 3
},
{
"a": 4
}
]
}
}
]
}
```
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