fix: added error if no tokens are valid when starting in strict mode (#…

…587)

server/src/builder.rs

@@ -285,6 +285,10 @@ async fn build_edge(args: &EdgeArgs, app_name: &str) -> EdgeResult<EdgeInfo> {
         .await;
     }
 
+    if args.strict && token_cache.is_empty() {
+        error!("You started Edge in strict mode, but Edge was not able to validate any of the tokens configured at startup");
+        return Err(EdgeError::NoTokens("No valid tokens was provided on startup. At least one valid token must be specified at startup when running in Strict mode".into()));
+    }
     for validated_token in token_cache
         .iter()
         .filter(|candidate| candidate.value().token_type == Some(TokenType::Client))