fix: can't deref query result

Author: tiensonqin

src/main/frontend/components/query/result.cljs

@@ -57,7 +57,9 @@
                                                            :built-in-query? (:built-in-query? config)})]
           [k (rum/react result)]))
       (catch :default e
-        (reset! *query-error e)))))
+        (js/console.error e)
+        (reset! *query-error e)
+        [nil nil]))))
 
 (defn get-group-by-page [{:keys [result-transform query] :as query-m}
                          {:keys [table? db-graph?]}]

src/main/frontend/db/query_dsl.cljs

@@ -802,7 +802,7 @@ Some bindings in this fn:
            blocks? (if db-graph? true blocks?)]
        (when-let [query' (some-> query* (query-wrapper {:blocks? blocks?
                                                         :block-attrs (when db-graph? db-block-attrs)}))]
-         (let [random-samples (if @sample
+         (let [random-samples (if (and sample @sample)
                                 (fn [col]
                                   (take @sample (shuffle col)))
                                 identity)