org.springframework.dao.DataAccessResourceFailureException: Error retrieving database metadata; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Connection returned by DataSource [dataSource] was null

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Error retrieving database metadata; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Connection returned by DataSource [dataSource] was null
org.springframework.dao.DataAccessResourceFailureException: Error retrieving database metadata; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Connection returned by DataSource [dataSource] was null
at org.springframework.jdbc.core.metadata.CallMetaDataProviderFactory.createMetaDataProvider(CallMetaDataProviderFactory.java:141)

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