Dropzone is returning JSON response instead of turbo_stream - Rails 7

Question

I am using Dropzone with Rails 7 (Stimulus JS). I followed the documentation and somehow the image drag and drop is working fine but as I am integrating dropzone in existing form it is returning me the data in JSON response.

   def create
      return unless params[:body].present? && @benefit_request.client.present?

      Communication::SMS::SendOutboundMessage.call(body: params[:body],
                                                   client: @benefit_request.client,
                                                   sender: current_user)
      
      # here it is giving me error as it is expecting JSON template
      redirect_to request_sms_messages_path(@benefit_request)
    end

As I am redirecting to the specific portion using Turbo frame so I do not want to render the whole page.

ActionController::UnknownFormat (Activation::SMSMessagesController#index is missing a template for this request format and variant. request.formats: ["application/json"] request.variant: []):

This is my code and I have tried to change the response using

headers: {
    "Content-Type": "application/vnd.turbo_stream"
  }

but all in vain. I am not sure how can I pass the response data as turbo_stream

def create return unless params[:body].present? && @benefit_request.client.present?

  Communication::SMS::SendOutboundMessage.call(body: params[:body],
                                               client: @benefit_request.client,
                                               sender: current_user)
  
  # here it is giving me error as it is expecting JSON template
  redirect_to request_sms_messages_path(@benefit_request)
end