Health check paths are not supported for TCP health checks

I've been trying to create an elastic beanstalk environment, and I keep getting an error when eb tries to create the target group.

Creating target group failed Reason: Resource handler returned message: "Health check paths are not supported for TCP health checks (Service: ElasticLoadBalancingV2, Status Code: 400, Request ID: xxxxxxxx)" (RequestToken: xxxxxx, HandlerErrorCode: InvalidRequest)

If health check paths aren't allowed for TCP health checks , then what are you supposed to do since the default is set to / and the required length is 1 so you can't set it to empty?

Here is the part of my eb configuration that pertains to the nlb:

option_settings:
  aws:elbv2:listener:443:
    ListenerEnabled: "true"
Resources:
  AWSEBV2LoadBalancer:
    Type: AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      Scheme: internal
      Subnets:
        - subnet-xxxx
        - subnet-xxxx
        - subnet-xxxx
      Type: network
  AWSEBV2LoadBalancerListener:
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      Port: 443
      Protocol: TCP
  AWSEBV2LoadBalancerTargetGroup:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      Port: 443
      Protocol: TCP
      VpcId: vpc-xxxx