diff --git a/INSTALL.md b/INSTALL.md
index 9aad6779..9c4fd0f2 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -27,3 +27,4 @@ If `localhost:8000` returns the lbry.io website, it's running correctly.
 - Both the `dev.sh` and `docker.sh` scripts will initialise a configuration based on `data/config.php.example` if `data/config.php` does not exist.
 - Some pages and interactions rely on API keys that will not be available to you in your install.
 - To run remotely, simply install PHP and configure Apache or your server of choice to serve `web/index.php`.
+- If the dev.sh fail to start with missing php extension please install php-xml, php-curl, php-mbstring according to your OS instruction
\ No newline at end of file
diff --git a/dev.sh b/dev.sh
index 6c842bd9..5c5e9c51 100755
--- a/dev.sh
+++ b/dev.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e
+
 PHPBIN=php7.2
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"