diff --git a/CHANGELOG-2.2.md b/CHANGELOG-2.2.md
index 32cbed31d..e014a6cf7 100644
--- a/CHANGELOG-2.2.md
+++ b/CHANGELOG-2.2.md
@@ -82,3 +82,4 @@
 - [#3692](https://github.com/hyperf/hyperf/pull/3692) Fixed bug that class proxies couldn't be included when building phar.
 - [#3769](https://github.com/hyperf/hyperf/pull/3769) Fixed bug that `config-center` conflicts with `metrics`.
 - [#3770](https://github.com/hyperf/hyperf/pull/3770) Fixed type error when using `Str::slug()`.
+- [#3788](https://github.com/hyperf/hyperf/pull/3788) Fixed type error when using `BladeCompiler::getRawPlaceholder()`.
diff --git a/src/view-engine/src/Compiler/BladeCompiler.php b/src/view-engine/src/Compiler/BladeCompiler.php
index c9402f68a..589174a4c 100644
--- a/src/view-engine/src/Compiler/BladeCompiler.php
+++ b/src/view-engine/src/Compiler/BladeCompiler.php
@@ -591,7 +591,7 @@ class BladeCompiler extends Compiler implements CompilerInterface
      */
     protected function getRawPlaceholder($replace): string
     {
-        return str_replace('#', $replace, '@__raw_block_#__@');
+        return str_replace('#', (string) $replace, '@__raw_block_#__@');
     }
 
     /**