After Refresh we are missing standard skuid mobile pages on developer sandbox

Questions
1

After sandbox refresh from production, we are missing with SKUID standard mobile pages
1. MobilePageList
2. MobilePageBuilder
3. ThemeBuilderMobile_IFRAME

As we are missing above pages we are not able to open our mobile application with below error.

2

The mobile composer has been deprecated 
https://docs.skuid.com/latest/en/skuid/deprecated-features-api.html