improvement

layout/includes/third-party/chat/chatra.pug

@@ -6,10 +6,14 @@ script.
       (window.Chatra.q = window.Chatra.q || []).push(arguments)
     }
 
-    btf.getScript('https://call.chatra.io/chatra.js').then(() => {
-      const isChatBtn = !{theme.chat.rightside_button}
-      const isChatHideShow = !{theme.chat.button_hide_show}
+    const isChatBtn = !{theme.chat.rightside_button}
+    const isChatHideShow = !{theme.chat.button_hide_show}
 
+    if (isChatBtn) {
+      window.ChatraSetup = { startHidden: true }
+    }
+
+    btf.getScript('https://call.chatra.io/chatra.js').then(() => {
       if (isChatBtn) {
         const close = () => {
           Chatra('minimizeWidget')
@@ -21,11 +25,13 @@ script.
           Chatra('show')
         }
 
-        window.ChatraSetup = { startHidden: true }
-      
-        window.chatBtnFn = () => document.getElementById('chatra').classList.contains('chatra--expanded') ? close() : open()
+        window.chatBtnFn = () => {
+          const el = document.getElementById('chatra')
+          return el && el.classList.contains('chatra--expanded') ? close() : open()
+        }
 
-        document.getElementById('chat-btn').style.display = 'block'
+        const chatBtn = document.getElementById('chat-btn')
+        if (chatBtn) chatBtn.style.display = 'block'
       } else if (isChatHideShow) {
         window.chatBtn = {
           hide: () => Chatra('hide'),

layout/includes/third-party/chat/crisp.pug

@@ -21,7 +21,8 @@ script.
 
         window.chatBtnFn = () => $crisp.is("chat:visible") ? close() : open()
 
-        document.getElementById('chat-btn').style.display = 'block'
+        const chatBtn = document.getElementById('chat-btn')
+        if (chatBtn) chatBtn.style.display = 'block'
       } else if (isChatHideShow) {
         window.chatBtn = {
           hide: () => $crisp.push(["do", "chat:hide"]),

layout/includes/third-party/chat/tidio.pug

@@ -10,7 +10,7 @@ script.
           window.tidioChatApi.hide()
           isShow = false
         }
-        
+
         const open = () => {
           window.tidioChatApi.open()
           window.tidioChatApi.show()
@@ -32,8 +32,8 @@ script.
           isShow ? close() : open()
         }
 
-        document.getElementById('chat-btn').style.display = 'block'
-
+        const chatBtn = document.getElementById('chat-btn')
+        if (chatBtn) chatBtn.style.display = 'block'
       } else if (isChatHideShow) {
         window.chatBtn = {
           hide: () => window.tidioChatApi && window.tidioChatApi.hide(),