Migretion issue

sns 9,226 Reputation points

Migrated from sharepoint on premisis 2013 to sharepoint online, after this 2 search web parts which are content queri and content serch are not working instead giving an error as per the attached screenshot. We have done re-index at site level and site collection level.
we have seen refinement results are coming up after some time something went wrong error is popping up, u can see in the serch error screenshot of destination sites( SP online sites
Please suggest where could be the problem

A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
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  1. CaseyYang-MSFT 10,341 Reputation points

    Hi @sns ,

    Does this issue happen to all users? Does this issue still happen if you use some other query ?

    1.Please check search setting allow this site or document to appear in search results.
    Site level: Settings > Site information > View all site settings > Search and offline availability > Allow this site to appear in search results
    Library level: Settings > library settings > Advanced settings > Allow items from this document library to appear in search results

    2.Please check whether this search results web part has Hit-highlighted managed properties disappear in search schema.

    For Reference: SharePoint unfamiliar error on kw search: SubstrateSearchException: Remote executors failed
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  2. sns 9,226 Reputation points

    Hi CaseYang,

    I am seeing different error now. PFA.