The error above happens when a Detail Task is triggered from the Deep Security Manager, but failed to be executed in the agent side.
To resolve the issue, upgrade to the latest version of Deep Security.
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Keywords: Unable to complete the operation due to the following error on the Agent/Appliance: argument 1 expected a 'string', got a 'nil',Unable to complete the operation due to the following error on the Agent/Appliance: argument 1 expected a 'string' got a 'nil'