I was able to get this trigger working in Sandbox, but when I tried to upload to production via change set, I received code coverage errors. Pardot is telling me to use the force.com IDE, however we do not have experience with that tool. Any ideas why this trigger cannot be uploaded to production throught a change set? The Pardot package has been installed.

trigger LogPersonAccountChange on Account (before delete, after insert, after undelete)
{
  List<pi__ObjectChangeLog__c> logs = new List<pi__ObjectChangeLog__c>();
 
  if (Trigger.new != null) {
    for (Account account : Trigger.new) {
 
      if (Account.PersonEmail != null && Account.PersonEmail != '') {
        pi__ObjectChangeLog__c log = new pi__ObjectChangeLog__c();
        log.pi__ObjectFid__c = Account.PersonContactId;
        log.pi__ObjectType__c = 1;
        log.pi__ObjectEmail__c = Account.PersonEmail;
 
        if  (System.Trigger.isInsert) {
          log.pi__ObjectState__c = 1;
        } else if  (System.Trigger.isDelete) {
          log.pi__ObjectState__c = 2;
        } else if  (System.Trigger.isUnDelete) {
          log.pi__ObjectState__c = 3;
 
        }
        logs.add(log);
      }
    }
  } else if (Trigger.old != null) {
    for (Account account : Trigger.old) {
      if (Account.PersonEmail != null && Account.PersonEmail != '') {
        pi__ObjectChangeLog__c log = new pi__ObjectChangeLog__c();
 
        log.pi__ObjectFid__c = Account.PersonContactId
 
        ;
        log.pi__ObjectType__c = 1;
        log.pi__ObjectEmail__c = Account.PersonEmail;
        if  (System.Trigger.isInsert) {
          log.pi__ObjectState__c = 1;
        } else if  (System.Trigger.isDelete) {
          log.pi__ObjectState__c = 2;
        } else if  (System.Trigger.isUnDelete) {
          log.pi__ObjectState__c = 3;
        }
        logs.add(log);
      }
    }
  }
 
  if (logs.size() > 0) {
 
    insert logs;
  }
}