Hello My umbraco is configured for using mysql over a linux OS (in mysql config file, the lowercasetable_names fields is actually set to 2 but we tried 0, 1, and 2)

The cms is working correcly but when trying to import contents from an xml file I receive the following error:

Server Error in '/' Application. Table 'umbraco-cms.UMBRACONODE' doesn't exist Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: MySql.Data.MySqlClient.MySqlException: Table 'umbraco-cms.UMBRACONODE' doesn't exist

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[MySqlException (0x80004005): Table 'umbraco-cms.UMBRACONODE' doesn't exist] MySql.Data.MySqlClient.MySqlStream.ReadPacket() +388 MySql.Data.MySqlClient.NativeDriver.GetResult(Int32& affectedRow, Int64& insertedId) +375 MySql.Data.MySqlClient.Driver.NextResult(Int32 statementId, Boolean force) +121 MySql.Data.MySqlClient.MySqlDataReader.NextResult() +1083 MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior) +2503 umbraco.DataLayer.SqlHelpers.MySql.MySqlHelper.ExecuteReader(MySqlConnection connection, MySqlTransaction trx, String commandText, MySqlParameter[] commandParameters) +165 umbraco.DataLayer.SqlHelpers.MySql.MySqlHelper.ExecuteReader(String commandText, MySqlParameter[] parameters) +184 umbraco.DataLayer.SqlHelper`1.ExecuteReader(String commandText, IParameter[] parameters) +114