diff --git a/frontend/app.py b/frontend/app.py
index 4dbc1d0..85ff2bc 100644
--- a/frontend/app.py
+++ b/frontend/app.py
@@ -47,6 +47,7 @@ def rents():
     if not session['token']:
         return redirect(url_for('login'))
 
+    a = requests.get('http://localhost:8080/api/rents/', headers={'Authorization': session['token']})
     rents_data = requests.get('http://localhost:8080/api/rents/', headers={'Authorization': session['token']}).json()
     cars = list(
         filter(lambda c: c['car_station_id'] == session['car_station_id'],
@@ -59,8 +60,13 @@ def rents():
         from datetime import datetime
 
         date_format = '%Y-%m-%dT%H:%M:%S.%f'
+        date_format_another = '%Y-%m-%dT%H:%M:%S'
+
+        try:
+            parsed_date = datetime.strptime(rent['start_time'], date_format)
+        except ValueError:
+            parsed_date = datetime.strptime(rent['start_time'], date_format_another)
 
-        parsed_date = datetime.strptime(rent['start_time'], date_format)
         rent['start_time'] = parsed_date.strftime('%Y-%m-%d %H:%M:%S')
 
         for car in cars:
@@ -84,8 +90,8 @@ def rents():
                 cars=cars,
                 clients=clients,
                 logged_in=True,
-                selected_client=int(request.args.get('client')) if request.args.get('client') else None,
-                selected_car=int(request.args.get('car')) if request.args.get('car') else None
+                selected_client=request.args.get('client') if request.args.get('client') else None,
+                selected_car=request.args.get('car') if request.args.get('car') else None
             )
 
         response = None
@@ -94,8 +100,8 @@ def rents():
                           headers={'Authorization': session['token']})
         else:
             response = requests.post('http://localhost:8080/api/rents/', headers={'Authorization': session['token']}, json={
-                "client_id": int(request.form.get('client_id')),
-                "car_id": int(request.form.get('car_id'))
+                "client_id": request.form.get('client_id'),
+                "car_id": request.form.get('car_id')
             })
 
         if response.status_code != 200:
@@ -107,8 +113,8 @@ def rents():
                 cars=cars,
                 clients=clients,
                 logged_in=True,
-                selected_client=int(request.args.get('client')) if request.args.get('client') else None,
-                selected_car=int(request.args.get('car')) if request.args.get('car') else None
+                selected_client=request.args.get('client') if request.args.get('client') else None,
+                selected_car=request.args.get('car') if request.args.get('car') else None
             )
 
         if request.form.get('id'):
@@ -149,12 +155,12 @@ def rents():
         cars=cars,
         clients=clients,
         logged_in=True,
-        selected_client=int(request.args.get('client')) if request.args.get('client') else None,
-        selected_car=int(request.args.get('car')) if request.args.get('car') else None
+        selected_client=request.args.get('client') if request.args.get('client') else None,
+        selected_car=request.args.get('car') if request.args.get('car') else None
     )
 
 
-@app.route('/rents/<int:id>', methods=['GET', 'POST'])
+@app.route('/rents/<id>', methods=['GET', 'POST'])
 def rent(id):
     if not session['token']:
         return redirect(url_for('login'))
@@ -178,7 +184,7 @@ def rent(id):
 
 
 @app.route('/clients', defaults={'id': 0}, methods=['GET', 'POST'])
-@app.route('/clients/<int:id>', methods=['GET', 'POST'])
+@app.route('/clients/<id>', methods=['GET', 'POST'])
 def clients(id):
     if not session['token']:
         return redirect(url_for('login'))
@@ -242,7 +248,7 @@ def clients(id):
 
 
 @app.route('/owners', defaults={'id': 0}, methods=['GET', 'POST'])
-@app.route('/owners/<int:id>', methods=['GET', 'POST'])
+@app.route('/owners/<id>', methods=['GET', 'POST'])
 def owners(id):
     if not session['token']:
         return redirect(url_for('login'))
@@ -315,7 +321,7 @@ def owners(id):
 
 
 @app.route('/cars', defaults={'id': 0}, methods=['GET', 'POST'])
-@app.route('/cars/<int:id>', methods=['GET', 'POST'])
+@app.route('/cars/<id>', methods=['GET', 'POST'])
 def cars(id):
     if not session['token']:
         return redirect(url_for('login'))
@@ -338,7 +344,7 @@ def cars(id):
                     cars=cars,
                     owners=owners,
                     logged_in=True,
-                    selected_owner=int(request.args.get('owner')) if request.args.get('owner') else None
+                    selected_owner=request.args.get('owner') if request.args.get('owner') else None
                 )
 
             response = requests.patch(f'http://localhost:8080/api/cars/{id}', headers={'Authorization': session['token']},
@@ -346,7 +352,7 @@ def cars(id):
                                           'brand': request.form.get('brand'),
                                           'model': request.form.get('model'),
                                           'price': float(request.form.get('price')),
-                                          'owner_id': int(request.form.get('owner_id')),
+                                          'owner_id': request.form.get('owner_id'),
                                           'car_station_id': session['car_station_id']
                                       })
 
@@ -359,14 +365,14 @@ def cars(id):
                     owners=owners,
                     current_car=list(filter(lambda c: c['id'] == id, cars))[0],
                     logged_in=True,
-                    selected_owner=int(request.args.get('owner')) if request.args.get('owner') else None
+                    selected_owner=request.args.get('owner') if request.args.get('owner') else None
                 )
 
             return redirect(url_for('cars'))
         else:
             if not request.form.get('brand') or not request.form.get('model') or not request.form.get('price') or not request.form.get('owner_id'):
                 return render_template('cars.html', title='Автомобили', errors='Должны быть заполнены все поля!',
-                                       owners=owners, selected_owner=int(request.args.get('owner')) if request.args.get('owner') else None,
+                                       owners=owners, selected_owner=request.args.get('owner') if request.args.get('owner') else None,
                                        cars=cars, logged_in=True)
 
             response = requests.post('http://localhost:8080/api/cars/', headers={'Authorization': session['token']},
@@ -374,21 +380,21 @@ def cars(id):
                                          'brand': request.form.get('brand'),
                                          'model': request.form.get('model'),
                                          'price': float(request.form.get('price')),
-                                         'owner_id': int(request.form.get('owner_id')),
+                                         'owner_id': request.form.get('owner_id'),
                                          'car_station_id': session['car_station_id']
                                      })
 
             if response.status_code != 200:
                 return render_template('cars.html', title='Автомобили', errors=response.json(), cars=cars,
-                                       owners=owners, selected_owner=int(request.args.get('owner')) if request.args.get('owner') else None,
+                                       owners=owners, selected_owner=request.args.get('owner') if request.args.get('owner') else None,
                                        logged_in=True)
 
         cars = requests.get('http://localhost:8080/api/cars/', headers={'Authorization': session['token']}).json()
 
     if id != 0:
-        return render_template('cars.html', title='Изменение автомобиля', cars=cars, logged_in=True, owners=owners, selected_owner=int(request.args.get('owner')) if request.args.get('owner') else None, current_car=list(filter(lambda c: c['id'] == id, cars))[0])
+        return render_template('cars.html', title='Изменение автомобиля', cars=cars, logged_in=True, owners=owners, selected_owner=request.args.get('owner') if request.args.get('owner') else None, current_car=list(filter(lambda c: c['id'] == id, cars))[0])
 
-    return render_template('cars.html', title='Автомобили', cars=cars, logged_in=True, owners=owners, selected_owner=int(request.args.get('owner')) if request.args.get('owner') else None)
+    return render_template('cars.html', title='Автомобили', cars=cars, logged_in=True, owners=owners, selected_owner=request.args.get('owner') if request.args.get('owner') else None)
 
 
 @app.route('/report')