diff --git a/src/assets/scss/options.scss b/src/assets/scss/options.scss
index ff7c44c..dc3109b 100644
--- a/src/assets/scss/options.scss
+++ b/src/assets/scss/options.scss
@@ -8,19 +8,17 @@
   width: 16px;
   z-index: 20;
 
-  a {
-    .toggler {
-      color: variables.$lgrey;
-      display: inline-block;
-      font-size: 16px;
-      position: absolute;
-      right: 1em;
-      top: 0;
-      z-index: 20;
+  .toggler {
+    color: variables.$lgrey;
+    display: inline-block;
+    font-size: 16px;
+    position: absolute;
+    right: 1em;
+    top: 0;
+    z-index: 20;
 
-      :hover {
-        color: variables.$white;
-      }
+    :hover {
+      color: variables.$white;
     }
   }
 
@@ -38,18 +36,17 @@
     top: 1em;
     width: 100%;
   }
+}
+
+#options.opened {
+  height: 50%;
+  width: 50%;
 
   .editor {
-    .error {
-      color: red;
-    }
+    display: flex;
   }
 
-  .opened {
-    height: 50%;
-    width: 50%;
-    .editor {
-      display: flex;
-    }
+  .error {
+    color: red;
   }
 }
diff --git a/src/client/wetty/term/confiruragtion.ts b/src/client/wetty/term/confiruragtion.ts
index 72fb85a..9c0c6e2 100644
--- a/src/client/wetty/term/confiruragtion.ts
+++ b/src/client/wetty/term/confiruragtion.ts
@@ -1,8 +1,8 @@
 import _ from 'lodash';
-import JSON5 from 'json5';
 
 import type { Term } from '../shared/type';
 import { copySelected, copyShortcut } from './confiruragtion/clipboard';
+import { onInput } from './confiruragtion/editor';
 import { editor } from '../../shared/elements';
 import { loadOptions } from './confiruragtion/load';
 
@@ -14,23 +14,7 @@ export function configureTerm(term: Term): void {
   const config = JSON.stringify(options, null, 2);
   if (!_.isNull(editor)) {
     editor.value = config;
-    editor.addEventListener('keyup', () => {
-      try {
-        const updated = JSON5.parse(editor.value);
-        const updatedConf = JSON.stringify(updated, null, 2);
-        editor.value = updatedConf;
-        editor.classList.remove('error');
-        localStorage.options = updatedConf;
-        Object.keys(updated).forEach(key => {
-          const value = updated[key];
-          term.setOption(key, value);
-        });
-        term.resizeTerm();
-      } catch {
-        // skip
-        editor.classList.add('error');
-      }
-    });
+    editor.addEventListener('keyup', onInput(term));
     const toggle = document.querySelector('#options .toggler');
     const optionsElem = document.getElementById('options');
     if (!_.isNull(toggle) && !_.isNull(optionsElem)) {
diff --git a/src/client/wetty/term/confiruragtion/editor.ts b/src/client/wetty/term/confiruragtion/editor.ts
new file mode 100644
index 0000000..95ce885
--- /dev/null
+++ b/src/client/wetty/term/confiruragtion/editor.ts
@@ -0,0 +1,23 @@
+import JSON5 from 'json5';
+
+import type { Term } from '../../shared/type';
+import { editor } from '../../../shared/elements';
+
+export const onInput = (term: Term) => (): void => {
+  try {
+    const updated = JSON5.parse(editor.value);
+    const updatedConf = JSON.stringify(updated, null, 2);
+    if (localStorage.options === updatedConf) return;
+    Object.keys(updated).forEach(key => {
+      const value = updated[key];
+      term.setOption(key, value);
+    });
+    term.resizeTerm();
+    editor.value = updatedConf;
+    editor.classList.remove('error');
+    localStorage.options = updatedConf;
+  } catch {
+    // skip
+    editor.classList.add('error');
+  }
+};
diff --git a/src/server.ts b/src/server.ts
index 4fcdc8e..3efe3ce 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -64,7 +64,7 @@ export async function startServer(
         });
         spawn(socket, args);
       } catch (error) {
-        logger.info('Disconnect signal sent');
+        logger.info('Disconnect signal sent', { err: error });
       }
     }
   });
diff --git a/src/server/command/ssh.ts b/src/server/command/ssh.ts
index 6e3a2a6..1652643 100644
--- a/src/server/command/ssh.ts
+++ b/src/server/command/ssh.ts
@@ -2,19 +2,11 @@ import isUndefined from 'lodash/isUndefined.js';
 import { logger } from '../../shared/logger.js';
 
 export function sshOptions(
-  {
-    pass,
-    path,
-    command,
-    host,
-    port,
-    auth,
-    knownhosts,
-  }: { [s: string]: string },
+  { pass, path, command, host, port, auth, knownHosts }: Record<string, string>,
   key?: string,
 ): string[] {
   const cmd = parseCommand(command, path);
-  const hostChecking = knownhosts !== '/dev/null' ? 'yes' : 'no';
+  const hostChecking = knownHosts !== '/dev/null' ? 'yes' : 'no';
   const sshRemoteOptsBase = [
     'ssh',
     host,
@@ -24,7 +16,7 @@ export function sshOptions(
     '-o',
     `PreferredAuthentications=${auth}`,
     '-o',
-    `UserKnownHostsFile=${knownhosts}`,
+    `UserKnownHostsFile=${knownHosts}`,
     '-o',
     `StrictHostKeyChecking=${hostChecking}`,
   ];
diff --git a/src/server/login.ts b/src/server/login.ts
index 6cc035b..54671d6 100644
--- a/src/server/login.ts
+++ b/src/server/login.ts
@@ -1,6 +1,10 @@
 import pty from 'node-pty';
+import { dirname, resolve } from 'path';
+import { fileURLToPath } from 'url';
 import { xterm } from './shared/xterm.js';
 
+const __dirname = resolve(dirname(fileURLToPath(import.meta.url)), '..');
+
 export function login(socket: SocketIO.Socket): Promise<string> {
   // Check request-header for username
   const remoteUser = socket.request.headers['remote-user'];
diff --git a/src/server/socketServer/ssl.ts b/src/server/socketServer/ssl.ts
index 690dd7d..ccb35ec 100644
--- a/src/server/socketServer/ssl.ts
+++ b/src/server/socketServer/ssl.ts
@@ -1,14 +1,14 @@
 import fs from 'fs-extra';
-import path from 'path';
 import isUndefined from 'lodash/isUndefined.js';
+import { resolve } from 'path';
 import type { SSL, SSLBuffer } from '../../shared/interfaces';
 
 export async function loadSSL(ssl?: SSL): Promise<SSLBuffer> {
   if (isUndefined(ssl) || isUndefined(ssl.key) || isUndefined(ssl.cert))
     return {};
   const [key, cert]: Buffer[] = await Promise.all([
-    fs.readFile(path.resolve(ssl.key)),
-    fs.readFile(path.resolve(ssl.cert)),
+    fs.readFile(resolve(ssl.key)),
+    fs.readFile(resolve(ssl.cert)),
   ]);
   return { key, cert };
 }