Previously report was showing But after running

dbt run --full-refresh --model _modelname_

Then ran edr test modelname , it succeeded but

Not enough data to calculate anomaly score

models:
  - name: metric_docs
    config:
      elementary:
        timestamp_column: 'date'
    columns:
      - name: value
        tests:
          - elementary.column_anomalies:
              column_anomalies:
                - sum
              time_bucket:
                period: month
                count: 1
              days_back: 365
              config:
                # optional - change severity
                severity: ERROR
              anomaly_sensitivity: 1.8
              where_expression: "product_name = 'US Domestic' "