One of the reason for causing the below error is due to missing database upgrade in the server for search service application.
ERROR :The synchronization operation of the search component: 8bce98fb-8409-491d-877e-143590c9f055 associated to the search application: Search Service Application on server:
In order to update the SharePoint databases, you must manually run the PSconfig utility. To run the utility:
Check if the server needs update with the following command in the sharepoint powershell admin,
If it returns TRUE, then follow the steps below
1.Open an Administrative command prompt.
2.Change directory to C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\BIN
3.Run PSConfig.exe -cmd upgrade -inplace b2b -force -cmd applicationcontent -install -cmd installfeatures
This will take couple of minutes to finish.