Non-public URL scheme

i have faced “non-public URL scheme, which is a private entity” issue itunesconnect Rejected my app release. i have no idea how do identify in my source code to fix this , if any one have idea , please help me to fix this issue.
thank you

You will also need to check the source code of any plugins you use.

For example:

Hi Mr. robinya , thank you for helping me , i have used background-geolocation plugin for ios , i will check and fixed.

How do we fix this? We have same mauron85 plugin issue…