get_order_report_data should return string
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@ -59,7 +59,7 @@ class WC_Admin_Report {
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extract( $args );
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extract( $args );
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if ( empty( $data ) ) {
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if ( empty( $data ) ) {
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return false;
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return '';
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}
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}
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$query = array();
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$query = array();
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