Hello ravi45722,

This line:

my @occured_errors = keys $OTAF_data{'Errors'};
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should be giving you a keys on reference is experimental message. Change to the standard hash dereference syntax:

my @occured_errors = keys %{ $OTAF_data{'Errors'} };
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and the error (i.e., the original problem) should go away, even when there is no Errors key present in the hash.

Update: Added the underlined phrase for clarification.

Hope that helps,