Fix AssertionFailedError

✅ Solution

AssertionFailedError in Elasticsearch verifier tests usually arises from timing issues where data hasn't fully propagated or indices haven't initialized before an assertion is made. To fix this, introduce short delays (using `time.sleep()`) or retry mechanisms within the test to allow Elasticsearch sufficient time to complete operations before verifying the results, ensuring assertions are accurate. Carefully select the delay duration or retry count to balance test stability and execution time.