🧑‍💻 Check that the Acorn bootloader exists before booting (#3121)

functions.php

@@ -29,9 +29,7 @@ require $composer;
 |
 */
 
-try {
-    \Roots\bootloader()->boot();
-} catch (Throwable $e) {
+if (! function_exists('\Roots\bootloader')) {
     wp_die(
         __('You need to install Acorn to use this theme.', 'sage'),
         '',
@@ -42,6 +40,8 @@ try {
     );
 }
 
+\Roots\bootloader()->boot();
+
 /*
 |--------------------------------------------------------------------------
 | Register Sage Theme Files