[Ref] Remove some instances of fatal in BAO classes

[eileenmcnaughton]

Overview

[Ref] Remove some instances of fatal in BAO classes

Before

  CRM_Core_Error::fatal(ts('No batches were selected.'));

After

  throw new CRM_Core_Exception(ts('No export format selected.'));

Technical Details

Comments

[civibot]

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[seamuslee001]

Jenkins re test this please