conecctor mysql

Is there a way to check if there are mysql results or not?

Hi,

I want to know if is there any way in order to check if there are mysql results or not. I have created a service tasks with a mysql conector. In this conncetor i have implemented this mysql query:

SELECT * FROM documentation WHERE
name_doc='aaaa'
and version_doc='22';

But when i'm trying to check if this works or not, i see this error:

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