Seeing multiple error messages in watchdog while performing a search:
Drupal\search_api\SearchApiException: The datasource with ID '1oqsme--entity:node' could not be retrieved for index 'Global Search'. in Drupal\search_api\Entity\Index->getDatasource()
Everything seems to be working fine performing the search except for this error messages in the watchdog.
This seems to happen if you use a Solr Server with setting "Retrieve result data from Solr" (retrieve_data).
(It is a scenario in which multiple Drupal instances use one solr core).
The "1oqsme" part of the datasource ID mentioned in the error is the hash of the instance in Solr.
It seems that Drupal cannot handle this datasource ID, because of the hash.
Skip "preLoadResultItems" in "preRender" if the Solr Server is configured as given above.
Provide a patch
Fixed
4.2
Code
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