diff --git a/packages/hydrojudge/src/daemon.ts b/packages/hydrojudge/src/daemon.ts
index c4b637c48..6cee00045 100644
--- a/packages/hydrojudge/src/daemon.ts
+++ b/packages/hydrojudge/src/daemon.ts
@@ -14,7 +14,7 @@
 import './utils';
 
 import PQueue from 'p-queue';
-import { fs } from '@hydrooj/utils';
+import { fs, Time } from '@hydrooj/utils';
 import { getConfig } from './config';
 import HydroHost from './hosts/hydro';
 import Vj4Host from './hosts/vj4';
@@ -53,6 +53,10 @@ async function daemon() {
     const queue = new PQueue({ concurrency: Infinity });
     await fs.ensureDir(getConfig('tmp_dir'));
     queue.on('error', (e) => log.error(e));
+    if (!Object.keys(_hosts).length) {
+        log.warn('No host configured');
+        setInterval(() => log.warn('No host configured'), Time.hour);
+    }
     for (const i in _hosts) {
         _hosts[i].host ||= i;
         hosts[i] = _hosts[i].type === 'vj4' ? new Vj4Host(_hosts[i]) : new HydroHost(_hosts[i]);
diff --git a/packages/ui-default/components/datepicker/datepicker.page.tsx b/packages/ui-default/components/datepicker/datepicker.page.tsx
index 99a008681..7d338d267 100644
--- a/packages/ui-default/components/datepicker/datepicker.page.tsx
+++ b/packages/ui-default/components/datepicker/datepicker.page.tsx
@@ -41,7 +41,7 @@ function initTimePicker(input: HTMLInputElement) {
       }).on('mousedown', (e) => {
         e.preventDefault();
         $input.val(time).trigger('change');
-        closeDropdown(); // eslint-disable-line no-use-before-define
+        closeDropdown(); // eslint-disable-line ts/no-use-before-define
       }).on('mouseenter', function () {
         $(this).css('background', 'var(--highlight-color, #e8f0fe)');
       }).on('mouseleave', function () {