diff --git a/app/modules/common/common.py b/app/modules/common/common.py
index 6c568178..5715c624 100644
--- a/app/modules/common/common.py
+++ b/app/modules/common/common.py
@@ -136,8 +136,7 @@ def return_nice_path(return_path: str, is_service=1) -> str:
 	Formats the given return path to make it a nice path.
 
 	:param return_path: The return path that needs to be formatted.
-	:param is_service: A flag indicating whether the return path must contain the name of the service.
-	                   Defaults to 1.
+	:param is_service: A flag indicating whether the return path must contain the name of the service. Defaults to 1.
 	:return: The formatted nice path.
 
 	"""
diff --git a/app/modules/roxywi/nettools.py b/app/modules/roxywi/nettools.py
index 3b60924b..95e0c46f 100644
--- a/app/modules/roxywi/nettools.py
+++ b/app/modules/roxywi/nettools.py
@@ -9,6 +9,8 @@ import app.modules.server.server as server_mod
 
 def ping_from_server(server_from: str, server_to: str, action: str) -> Response:
     action_for_sending = ''
+    if server_to == '':
+        raise Exception('warning: Wrong IP address or name')
 
     def paint_output(generated):
         yield '<div class="ping_pre">'
@@ -112,6 +114,8 @@ def nslookup_from_server(server_from: str, dns_name: str, record_type: str) -> s
 
 
 def whois_check(domain_name: str) -> str:
+    if domain_name == '':
+        raise Exception('warning: Wrong DNS name')
     try:
         whois_data = json.loads(str(whois.whois(domain_name)))
     except Exception as e:
diff --git a/app/routes/main/routes.py b/app/routes/main/routes.py
index f66133a8..904c80a7 100644
--- a/app/routes/main/routes.py
+++ b/app/routes/main/routes.py
@@ -124,13 +124,25 @@ def nettools_check(check):
     domain_name = common.is_ip_or_dns(request.form.get('nettools_whois_name'))
 
     if check == 'icmp':
-        return nettools_mod.ping_from_server(server_from, server_to, action)
+        try:
+            return nettools_mod.ping_from_server(server_from, server_to, action)
+        except Exception as e:
+            return str(e)
     elif check == 'tcp':
-        return nettools_mod.telnet_from_server(server_from, server_to, port_to)
+        try:
+            return nettools_mod.telnet_from_server(server_from, server_to, port_to)
+        except Exception as e:
+            return str(e)
     elif check == 'dns':
-        return nettools_mod.nslookup_from_server(server_from, dns_name, record_type)
+        try:
+            return nettools_mod.nslookup_from_server(server_from, dns_name, record_type)
+        except Exception as e:
+            return str(e)
     elif check == 'whois':
-        return jsonify(nettools_mod.whois_check(domain_name))
+        try:
+            return jsonify(nettools_mod.whois_check(domain_name))
+        except Exception as e:
+            return str(e)
     else:
         return 'error: Wrong check'
 
diff --git a/app/static/js/add.js b/app/static/js/add.js
index 301e0dae..94535e8b 100644
--- a/app/static/js/add.js
+++ b/app/static/js/add.js
@@ -265,10 +265,6 @@ $( function() {
 			}
 			$.ajax({
 				url: "/app/add/show/ip/" + $("#serv").val(),
-				// data: {
-				// 	show_ip: request.term,
-				// 	token: $('#token').val()
-				// },
 				success: function (data) {
 					data = data.replace(/\s+/g, ' ');
 					response(data.split(" "));
@@ -289,10 +285,6 @@ $( function() {
 			}
 			$.ajax({
 				url: "/app/add/show/ip/" + $("#serv2").val(),
-				// data: {
-				// 	show_ip: request.term,
-				// 	token: $('#token').val()
-				// },
 				success: function (data) {
 					data = data.replace(/\s+/g, ' ');
 					response(data.split(" "));
@@ -313,9 +305,6 @@ $( function() {
 			}
 			$.ajax({
 				url: "/app/runtimeapi/backends/" + $("#serv2").val(),
-				// data: {
-				// 	token: $('#token').val()
-				// },
 				success: function (data) {
 					response(data.split('<br>'));
 				}
@@ -1519,10 +1508,6 @@ function deleteSsl(id) {
 function change_select_acceleration(id) {
 	$.ajax({
 		url: "/app/service/haproxy/version/" + $('#serv' + id + ' option:selected').val(),
-		// data: {
-		// 	token: $('#token').val()
-		// },
-		// type: "POST",
 		success: function (data) {
 			data = data.replace(/\s+/g, ' ');
 			if (parseFloat(data) < parseFloat('1.8') || data == ' ') {
@@ -1536,10 +1521,6 @@ function change_select_acceleration(id) {
 function change_select_waf(id) {
 	$.ajax({
 		url: "/app/service/haproxy/version/" + $('#serv' + id + ' option:selected').val(),
-		// data: {
-		// 	token: $('#token').val()
-		// },
-		// type: "POST",
 		success: function (data) {
 			if (parseFloat(data) < parseFloat('1.8')) {
 				$("#waf" + id).checkboxradio("disable");
@@ -2104,10 +2085,6 @@ function make_actions_for_adding_bind(section_id) {
 			}
 			$.ajax({
 				url: "/app/add/show/ip/" + $("#" + serv).val(),
-				// data: {
-				// 	show_ip: request.term,
-				// 	token: $('#token').val()
-				// },
 				success: function (data) {
 					data = data.replace(/\s+/g, ' ');
 					response(data.split(" "));
@@ -2159,11 +2136,3 @@ function changePortCheckFromServerPort() {
 		$($(this)).next().val(iNum);
 	});
 }
-var select_server = $('#translate').attr('data-select_server');
-function checkIsServerFiled(select_id, message = select_server) {
-	if ($(select_id).val() == null || $(select_id).val() == '') {
-		toastr.warning(message);
-		return false;
-	}
-	return true;
-}