Unable to start springboot app - Resource location must not be null

This might help someone:

Any ssl config could cause this, In my case I had following left over configuration:

server.ssl.protocol=TLS
server.ssl.enabled-protocols=TLSv1.2

removing these fixed the issue.

Adding: server.ssl.enabled=false in my application.properties solved the problem. I assume ssl configuration was expected based on the parent boot starter pom?? Again, not sure why this is working fine in a linux VM. Don't have time to dive deeper into this, maybe someone else can shed a bit more light.

I had been disabling and enabling HTTPS (server.ssl.enabled=true) but had forgotten to add these back:

server.ssl.key-store=file:///Users/...
server.ssl.key-store-password=******

Might help some one in the future.

It happened to me when I had ssl.enabled : true but other SSL parameters were not set (because of bad indentation in YAML file). This is how it looks in config/application.yaml when working good.

environments:
  production:
    server:
      port: 9080
      ssl:
        enabled: true
        key-store: /home/peter/app/ucast.rewara.com/ucast.rewara.com.cert.jks
        key-store-password: drowssapekaf
        key-password: ewerw23121sdsd
        key-alias: ucast.rewara.com
    grails:
      serverURL: "https://ucast.rewara.com:9080"`