Last modified: 2013-11-05 10:46:53 UTC
WMF server request: http://www.wikidata.org/w/api.php?format=json; POSTDATA: action=wbeditentity&id=Q15078866&baserevid=79260493&data=%7B%22labels%22%3A%7B%22zh-cn%22%3A%7B%22language%22%3A%22zh-cn%22%2C%22value%22%3A%22bot+test%22%7D%7D%2C%22claims%22%3A%7B%22P442%22%3A%5B%7B%22mainsnak%22%3A%7B%22snaktype%22%3A%22value%22%2C%22property%22%3A%22P442%22%2C%22datavalue%22%3A%7B%22value%22%3A%2211+01%22%2C%22type%22%3A%22string%22%7D%7D%2C%22type%22%3A%22statement%22%2C%22rank%22%3A%22normal%22%7D%2C%7B%22id%22%3Anull%2C%22mainsnak%22%3A%7B%22snaktype%22%3A%22value%22%2C%22property%22%3A%22P442%22%2C%22datavalue%22%3A%7B%22value%22%3A%7B%22entity-type%22%3A%22item%22%2C%22numeric-id%22%3A748149%7D%2C%22type%22%3A%22wikibase-entityid%22%7D%7D%2C%22type%22%3A%22statement%22%2C%22rank%22%3A%22normal%22%7D%5D%7D%7D&token=[token-removed]&summary=Populate+%5B%5BProperty%3AP132%5D%5D+from+%5B%5BProperty%3AP442%5D%5D&clear=&bot=; response: {"servedby":"mw1129","error":{"code":"internal_api_error_InvalidArgumentException","info":"Exception Caught: $claimGuid needs to be a string","*":""}}
You are passing a value of null in this request, which is not a string. The I'd part of the claim either needs to be a valid claim guid or not be set.
