Code 04_02 Error creating EC2 Subnet: InvalidSubnet.Conflict

[ccluskey]

When I try to apply the plan on the 04_02 branch I'm getting an error:

Error: creating EC2 Subnet: InvalidSubnet.Conflict: The CIDR '10.0.102.0/24' conflicts with another subnet status code: 400, request id: d24db4d9-d13d-44e3-b741-b4af409fc7d7
with module.blog_vpc.aws_subnet.public[1]
on .terraform/modules/blog_vpc/main.tf line 97, in resource "aws_subnet" "public":
resource "aws_subnet" "public" {