diff --git a/packages/hydrooj/bin/hydrooj.js b/packages/hydrooj/bin/hydrooj.js
index ecce3b7a3..53bbe06ab 100755
--- a/packages/hydrooj/bin/hydrooj.js
+++ b/packages/hydrooj/bin/hydrooj.js
@@ -2,8 +2,9 @@
 require('@hydrooj/utils/lib/register');
 
 const packageBasedir = require('path').resolve(__dirname, '..');
+const { homedir } = require('os');
 const { default: hook } = require('require-resolve-hook');
-const { bypass } = hook(/^(hydrooj|@hydrooj\/utils|cordis|lodash|js-yaml)($|\/)/, (id) => {
+const { bypass } = hook(/^(hydrooj|@hydrooj|cordis|lodash|js-yaml)($|\/)/, (id) => {
     if (id.startsWith('hydrooj/src')) {
         console.log('module require via %s is deprecated.', id);
         if (process.env.DEV) {
@@ -24,7 +25,11 @@ const { bypass } = hook(/^(hydrooj|@hydrooj\/utils|cordis|lodash|js-yaml)($|\/)/
             try {
                 return require.resolve(id, { paths: [`${process.cwd()}/node_modules`] });
             } catch (e) {
-                return id;
+                try {
+                    return require.resolve(id.replace(/^@hydrooj\//, './'), { paths: [`${homedir()}/.hydro/addons`] });
+                } catch (er) {
+                    return id;
+                }
             }
         }
     });
diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index edf3f4008..dc74baf11 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "4.9.4",
+    "version": "4.9.5",
     "bin": "bin/hydrooj.js",
     "main": "src/plugin-api",
     "module": "src/plugin-api",
diff --git a/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx b/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx
index 0c6d9ee31..0efbc32a9 100644
--- a/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx
+++ b/packages/ui-default/components/scratchpad/ScratchpadToolbarContainer.jsx
@@ -83,8 +83,8 @@ export default connect(mapStateToProps, mapDispatchToProps)(class ScratchpadTool
     super(props);
     if (!availableLangs[this.props.editorLang]) {
       // preference not allowed
-      const key = keys.filter((i) => availableLangs[i].pretest)
-        .find((i) => availableLangs[i].pretest.split('.')[0] === this.props.editorLang.split('.')[0]);
+      const key = this.props.editorLang ? keys.filter((i) => availableLangs[i].pretest)
+        .find((i) => availableLangs[i].pretest.split('.')[0] === this.props.editorLang.split('.')[0]) : '';
       this.props.setEditorLanguage(key || keys[0]);
     }
   }
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index 26c0c19c0..505d5b590 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.48.8",
+  "version": "4.48.9",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "index.ts",