diff --git a/kill_ports.sh b/kill_ports.sh
new file mode 100755
index 0000000..7f941b8
--- /dev/null
+++ b/kill_ports.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# Ports to check and kill
+PORTS=(8080 3030 4200)
+
+for port in "${PORTS[@]}"; do
+  echo "Checking port $port..."
+  
+  PID=$(lsof -ti tcp:$port)
+  
+  if [ -n "$PID" ]; then
+    echo "Killing process on port $port with PID: $PID"
+    kill -9 $PID
+  else
+    echo "No process found on port $port."
+  fi
+done
\ No newline at end of file
diff --git a/start_local.sh b/start_local.sh
old mode 100644
new mode 100755
index 85e015c..7715714
--- a/start_local.sh
+++ b/start_local.sh
@@ -6,37 +6,22 @@ base_dir="$(pwd)/aoame"
 # Change directory and start fuseki server
 git_name=fuseki-heroku-test
 cd "$base_dir/$git_name"
+echo "### STARTING fuseki-server.sh ###"
 sh -x fuseki-server.sh &
+echo "### fuseki-server.sh STARTED ###"
 
 # Change directory and start web server for web service
 git_name=OntologyBasedModellingEnvironment-WebService
 cd "$base_dir/$git_name"
+echo "### STARTING start_webserver.sh ###"
 sh -x start_webserver.sh &
+echo "### start_webserver.sh STARTED ###"
 
 # Change directory and start server for web app
 git_name=OntologyBasedModellingEnvironment-WebApp
 cd "$base_dir/$git_name"
+export NODE_OPTIONS=--openssl-legacy-provider
+ng build
+echo "### ng build DONE ###"
 node server.js
-
-#!/bin/bash
-
-# Set the base directory
-base_dir="$(pwd)/aoame"
-
-# Change directory and start fuseki server
-git_name=fuseki-heroku-test
-cd "$base_dir/$git_name"
-sh -x fuseki-server.sh &
-
-# Change directory and start web server for web service
-git_name=OntologyBasedModellingEnvironment-WebService
-cd "$base_dir/$git_name"
-sh -x start_webserver.sh &
-
-# Set trap to stop all child processes when this script receives SIGINT, SIGTERM, or EXIT signals
-trap 'pkill -P $$' SIGINT SIGTERM EXIT
-
-# Change directory and start server for web app
-git_name=OntologyBasedModellingEnvironment-WebApp
-cd "$base_dir/$git_name"
-node server.js &
\ No newline at end of file
+echo "### node server.js DONE ###"
\ No newline at end of file