correct the Problem with the react route/urls in flask

vrpmdvserver/vrpmdvserver.py

@@ -1,4 +1,6 @@
 # from vrpmdv-server/vrpmdv-main import application
+import logging
+import os
 import sys
 import json
 from flask import Flask, request , send_from_directory , Response
@@ -10,15 +12,30 @@ from vrpmdvmonreqschema import VRPMDV_MonReqSchema
 
 
 app = Flask(__name__, static_url_path='', static_folder='./build')
+#app = Flask(__name__, static_url_path='/public', static_folder='../build')
+#app = Flask(__name__)
 CORS(app) #comment this on deployment
 
 vrpmdvdata = VRPMDV_Data()
 
 
 @app.route("/", defaults={'path':''})
+#@app.route("/")
+@app.route('/<path:path>')
 def serve(path):
+    logging.basicConfig(format=format, level=logging.INFO, datefmt="%H:%M:%S")            
+    logging.info("vrpmdvserver: path:%s", path)                        
+    # path_dir = os.path.abspath("../build") #path react build
+    # if path != "" and os.path.exists(os.path.join(path_dir, path)):
+    #     return send_from_directory(os.path.join(path_dir), path)
+    # else:
+    #     return send_from_directory(os.path.join(path_dir),'index.html')
     return send_from_directory(app.static_folder,'index.html')
 
+@app.errorhandler(404)
+def not_found(e):
+    return app.send_static_file('index.html')
+
 @app.route('/vrpmdvapi/1_0/monitorings', methods=['GET'])
 def get_monitorings():
     data = vrpmdvdata.getMonitorings()