---
source: apollo-router/src/configuration/tests.rs
expression: error.to_string()
---
configuration had errors: 
1. at line 7

    # The socket address and port to listen on
    # Defaults to 127.0.0.1:4000
    listen: 127.0.0.1:4000
  cors:
    allow_headers: [ Content-Type, 5 ]
                                   ^----- 5 is not of type "string"
