Update for Foundry v13

module/system/hooks.js

@@ -15,7 +15,7 @@ export default function registerHooks() {
     }))
 
     Hooks.on('renderChatLog', (log, html, data) => BoLUtility.chatListeners(html))
-    Hooks.on('renderChatMessage', (message, html, data) => BoLUtility.chatMessageHandler(message, html, data))
+    Hooks.on('renderChatMessageHTML', (message, html, data) => BoLUtility.chatMessageHandler(message, html, data))
 
     /**
      * Create a macro when dropping an entity on the hotbar
@@ -73,8 +73,8 @@ export default function registerHooks() {
         button.addEventListener('click', () => {
           game.bol.charSummary.render(true)
         })
-        html.find('.header-actions').after(button)
+        $(html).find('.header-actions').after(button)
       }
     })
-    
+
 }