successfalsecode20001messagenested exception is orgapacheibatisexceptionsTooManyResultsException Expected one result or null to be returned by selectOne but found 2data

This error message indicates that an expected result set from a database query has returned more than one result, when the system was only expecting one or null. This can occur if there are duplicate records in the database, or if the query is not specific enough to narrow down the results to a single record. To resolve this error, you will need to refine the query to ensure that it returns only the expected results.