There are several reasons why a BungeeCord server may not startup. Remember that the first thing you should do when experiencing any issue is checking for errors in your server console.
Common Causes
- Most common: Your config.yml file has a YAML syntax error. YML config files require a very specific format - even the slightest error will mean the entire configuration can't be read. To solve this, you can check for YAML errors by pasting the contents of your file into a YAML parser such as https://yaml-online-parser.appspot.com/
- If using a custom JAR file: The name of your JAR file is incorrect. Please note that, if using a custom JAR, the file must be named
custom.jar. If named anything else, the server may throw an error as if it cannot bind to the IP address you have configured in your config.yml file.