Illegal field name when using dbt_utils.pivot

Have you tried using the prefix argument ? I think that would help this error.

select
  repayment_month,
  {{ dbt_utils.pivot('Repayment_Due_Month',dbt_utils.get_column_values(ref('trades'), 'volume'),
  prefix='column_prefix_') }}
from {{ ref('trades') }}
group by repayment_month