When  i insert data using data loader a contact should be created and after that another record should be created in another object. I have implemented the functionality using a trigger . But when i try to insert data it gives an error  :  enitity is deleted. and i am not able to load the records.

Below is the trigger for the contact creation.

trigger CreateParticipant on Contact (after insert) {
    List<Participant__c> newparticipant= new List<Participant__c>();
    
    for (Contact newPosition: Trigger.New) {
        if (newPosition.Id!=null) {
            newparticipant.add(new Participant__c(
                         First_Name__c=newPosition.FirstName,
                         Middle_Name__c=newPosition.MiddleName,
                         Last_Name__c=newPosition.LastName,
                         Birthdate__c=newPosition.Birthdate,
                         Gender__c=newPosition.Gender__c,
                         Mobile__c=newPosition.MobilePhone,
                         Work_Phone__c=newPosition.Phone,
                         Email__c=newPosition.Email,
                         Payor__c=newPosition.Payor__c,
                         Contact__c=newPosition.Id,
                         Network_Partner__c=newPosition.Network_Partner_Name__c));
        }
    }
    insert newparticipant;
}

Please help it's urgent