Add warning about unpublished containers (#20)

alinemorelli · Jun 6, 2019 · 21a3117 · 21a3117
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commit 21a3117
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diff --git a/README.md b/README.md
@@ -210,3 +210,5 @@ Look for gtm_auth and gtm_preview
 ### Note:
 
 - Disabling javascript in the browser can prevent the correct operation of this library if React is only being rendered on the client side.
+
+- Before implementing GTM in your application ensure that you have at least one published container, otherwise Google Tag Manager snippet will return 404.