fix: json serialization error when percentage is nan

utils/http.go

@@ -2,6 +2,7 @@ package utils
 
 import (
 	"encoding/json"
+	"log"
 	"net/http"
 )
 
@@ -9,7 +10,7 @@ func RespondJSON(w http.ResponseWriter, status int, object interface{}) {
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(status)
 	if err := json.NewEncoder(w).Encode(object); err != nil {
-		w.WriteHeader(http.StatusInternalServerError)
+		log.Printf("error while writing json response: %v", err)
 	}
 }