server.ssl.key-store=classpath:csrportal.p12 using classpath as well.

server.ssl.key-store-type=PKCS12
# The path to the keystore containing the certificate
server.ssl.key-store=classpath:csrportal.p12

try {
connector.setAttribute("keystoreFile",
ResourceUtils.getFile(cSRPortalSettings.getServerSslKeyStore()));
} catch (FileNotFoundException e) {
throw new IllegalStateException("Cannot load keystore",
e);
}

Exception encountered
during context initialization - cancelling refresh attempt:
org.springframework.context.ApplicationContextException: Unable to start
embedded container; nested exception is java.lang.IllegalStateException:
Cannot load keystore",
"Application startup
failed","logger_name":"org.springframework.boot.SpringApplication",
"stack_trace":"org.springframework.context.ApplicationContextException:
Unable to start embedded container; nested exception is
java.lang.IllegalStateException: Cannot load keystorentat