diff --git a/docs-source/src/en/config/api-exception.md b/docs-source/src/en/config/api-exception.md
index 07318c60..1a3de7c0 100644
--- a/docs-source/src/en/config/api-exception.md
+++ b/docs-source/src/en/config/api-exception.md
@@ -1917,4 +1917,36 @@ loadSystem {
 
 **Solution**
 
-Since the cache will store the found `Class` name in `SharedPreferences`, but the data directory does not exist in the System Framework, so please do not use this function in the System Framework.
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+Since the cache will store the found `Class` name in `SharedPreferences`, but the data directory does not exist in the System Framework, so please do not use this function in the System Framework.
+
+###### exception
+
+::: danger IllegalStateException
+
+Target Class type cannot cast to **TYPE**
+
+:::
+
+**Abnormal**
+
+Wrong type declared when converting a string class name to the target `Class` using the `toClass` method.
+
+> The following example
+
+```kotlin
+// Assume the target type is Activity but it was wrongly cast to WrongClass type
+val clazz = "android.app.Activity".toClass<WrongClass>()
+```
+
+**Solution**
+
+> The following example
+
+```kotlin
+// <Solution 1> Fill in the correct type
+val clazz1 = "android.app.Activity".toClass<Activity>()
+// <Solution 2> Do not fill in the generic declaration
+val clazz2 = "android.app.Activity".toClass()
+```
+
+Please ensure that the generic type declared after the `toClass` method is the specified target `Class` type, and you do not need to fill in the generic declaration if the target type is not sure.
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diff --git a/docs-source/src/zh-cn/config/api-exception.md b/docs-source/src/zh-cn/config/api-exception.md
index ccbaa276..49d3e242 100644
--- a/docs-source/src/zh-cn/config/api-exception.md
+++ b/docs-source/src/zh-cn/config/api-exception.md
@@ -1848,4 +1848,36 @@ loadSystem {
 
 **解决方案**
 
-由于缓存会将找到的 `Class` 名称存入 `SharedPreferences`，但是系统框架不存在 data 目录，所以请不要在系统框架中使用此功能。
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+由于缓存会将找到的 `Class` 名称存入 `SharedPreferences`，但是系统框架不存在 data 目录，所以请不要在系统框架中使用此功能。
+
+###### exception
+
+::: danger IllegalStateException 
+
+Target Class type cannot cast to **TYPE**
+
+:::
+
+**异常原因**
+
+使用 `toClass` 方法将字符串类名转换为目标 `Class` 时声明了错误的类型。
+
+> 示例如下
+
+```kotlin
+// 假设目标类型是 Activity 但是被错误地转换为了 WrongClass 类型
+val clazz = "android.app.Activity".toClass<WrongClass>()
+```
+
+**解决方案**
+
+> 示例如下
+
+```kotlin
+// <解决方案 1> 填写正确的类型
+val clazz1 = "android.app.Activity".toClass<Activity>()
+// <解决方案 2> 不填写泛型声明
+val clazz2 = "android.app.Activity".toClass()
+```
+
+请确保 `toClass` 方法后声明的泛型是指定的目标 `Class` 类型，在不确定目标类型的情况下你可以不需要填写泛型声明。
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