diff --git a/README.md b/README.md
index a0da8c9a..797c1ed3 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,12 @@ The VarDumper component provides mechanisms for walking through any arbitrary
 PHP variable. It provides a better `dump()` function that you can use instead
 of `var_dump()`.
 
+For the error below :
+
+Fatal error: Uncaught Error: Call to undefined function dump()
+
+excute this comand:
+composer require symfony/debug-pack
 Resources
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