Thread:Extension talk:Wikibase Repository/save button is kepted disabled when try to add statements

Hello. I tired many times but I cannot add any statements to an item...

(local env : mysql 5.5.41, php 5.4.10, mediawiki 1.24.1) For example if I try to add statement in an item such as "Obama", save button is kept disabled and spining icon is kept shown.

go to item page -> click add next to statements -> input property such as height -> save button is kept disabled and spining icon is kept show. (items and properties are created by using special page functions)

If I check with chrome(F12) I alwasy got the msg below but couldn't figure out why.. Could you help me out?

[Preview] error: {code: "param-missing",…} code: "param-missing" info: "A parameter that is required was missing (Either provide the item "ids" or pairs of "sites" and "titles" for corresponding pages)" messages: [{name: "wikibase-api-param-missing", parameters: [],…}] 0: {name: "wikibase-api-param-missing", parameters: [],…}