diff --git a/AIClasses/IPrompt.ts b/AIClasses/IPrompt.ts
index 28ba3af..c3b5587 100644
--- a/AIClasses/IPrompt.ts
+++ b/AIClasses/IPrompt.ts
@@ -3,7 +3,6 @@ import { Services } from "Services/Services";
 import { SystemInstruction } from "./SystemPrompt";
 import type { FileSystemService } from "Services/FileSystemService";
 import type { SettingsService } from "Services/SettingsService";
-import { Notice } from "obsidian";
 
 export interface IPrompt {
   systemInstruction(): string;
@@ -26,10 +25,6 @@ export class AIPrompt implements IPrompt {
 
   public async userInstruction(): Promise<string> {
     const result = await this.fileSystemService.readFile(this.settingsService.settings.userInstruction, true);
-    if (result instanceof Error) {
-      new Notice("Failed to load user instructions!");
-      return "";
-    }
-    return result;
+    return result instanceof Error ? "" : result;
   }
 }
\ No newline at end of file
diff --git a/Components/ChatInput.svelte b/Components/ChatInput.svelte
index 24e8003..00d4f61 100644
--- a/Components/ChatInput.svelte
+++ b/Components/ChatInput.svelte
@@ -39,8 +39,9 @@
   let userRequest = "";
 
   let diffOpen: boolean = false;
-  const diffOpenedRef: EventRef = eventService.on(Event.DiffOpened, () => { diffOpen = true; focusInput(); });
-  const diffClosedRef: EventRef = eventService.on(Event.DiffClosed, () => { diffOpen = false; focusInput(); });
+  
+  const diffOpenedRef: EventRef = eventService.on(Event.DiffOpened, () => { diffOpen = true; if (!Platform.isMobile){ focusInput(); } });
+  const diffClosedRef: EventRef = eventService.on(Event.DiffClosed, () => { diffOpen = false; if (!Platform.isMobile){ focusInput(); } });
 
   onDestroy(() => {
     eventService.offref(diffOpenedRef);
diff --git a/Services/FileSystemService.ts b/Services/FileSystemService.ts
index 20f9ca9..23fa92c 100644
--- a/Services/FileSystemService.ts
+++ b/Services/FileSystemService.ts
@@ -19,7 +19,10 @@ export class FileSystemService {
 
     public async readFile(filePath: string, allowAccessToPluginRoot: boolean = false): Promise<string | Error> {
         const file: TAbstractFile | null = this.vaultService.getAbstractFileByPath(filePath, allowAccessToPluginRoot);
-        if (file && file instanceof TFile) {
+        if (file == null) {
+            return Exception.new(`File does not exist: ${filePath}`);    
+        }
+        if (file instanceof TFile) {
             return await this.vaultService.read(file, allowAccessToPluginRoot);
         }
         return Exception.new(`Path is a folder, not a file: ${filePath}`);