Can not update page of detail

Hi all,

        In the first time, I create a new detail by "Detail Wizard" from schema object "UsrCampaignDetail" and add it to a section "UsrCampaign". I can use "Setup Detail" to modify layout and I have "UsrCampaignDetailPage1"

        Later, I follow this post https://community.bpmonline.com/node/27027 to create section from "UsrCampaignDetail". After that,I update layout of detail page "UsrCampaignDetailPageV2" from section wizard.

       When I come back the "detail" of "UsrCampaign", I double click in a row details, the system show the layout of "UsrCampaignDetailPageV2". Why? And from now, I can't update its layout. Even, I try create a new "detail" by "Detail Wizard", I can't setup its page. Console always shows error:

core-base.js:681 user: Supervisor/7f3b869f-34f3-4f20-ab4d-7480a5fdf647
 file: undefined
 line: undefined
 column: undefined
 message: Item with key 7157a8bf-2cc3-4261-8cfc-4ed8607cf3cc Does not exist 
 date: Fri May 10 2019 11:37:07 GMT+0700 (Indochina Time)
 moduleId: undefined
 moduleName: undefined

Please help me detect what error, and how to fix.

Thanks