Creating an api in flask without database leads to 405 error

app = Flask(__name__)
employees = [
    {"id": 1, "Name": "Ram", "Age": 20,"Gender":"Male"},
    {"id": 2, "Name": "Sita", "Age": 25,"Gender":"Female" }
]
   
@app.route('/', methods=['GET'])
def get_employees():
    return (employees)

@app.route('/employees/id', methods = ['GET'])
def get_employee(employee_id):
    for employee in employees:
        if employee['id']== employees_id:
            return employee
    return {'error':'Employee not found'}

I am new to Flask. I am trying to get employee by ID, but it throws 405 error. However I was able to get all the employees but not according to id.

you are missing the proper format for route passing id which would be <int:employee_id> as well as in parameter its employee_id

from flask import Flask, jsonify, request

app = Flask(__name__)
employees = [
    {"id": 1, "Name": "Ram", "Age": 20,"Gender":"Male"},
    {"id": 2, "Name": "Sita", "Age": 25,"Gender":"Female" },
    {"id": 3, "Name": "Mahesh", "Age":45,"Gender":"Male"},
    {"id": 4, "Name": "Rita", "Age": 52,"Gender":"Female"},
]
   
@app.route('/', methods=['GET'])
def get_employees():
    return (employees)

@app.route('/employees/<int:employee_id>', methods = ['GET'])
def get_employee(employee_id):
    for employee in employees:
        if employee['id']== employee_id:
            return employee
    return {'error':'Employee not found'}

@app.route('/', methods=['POST'])
def add_employee():
    new_employee={'id':len(employees)+1, 'Name':request.json['Name'], 'Age':request.json['Age'], 'Gender':request.json['Gender']}
    employees.append(new_employee)
    return(new_employee)

@app.route('/employees/<int:employee_id>', methods=['PUT'])
def update_employee(employee_id):
    for employee in employees:
        if employee['id']== employee_id:
            employee['Name']= request.json['Name']
            employee['Age']=request.json['Age']
            employee['Gender']=request.json['Gender']
            return employee
    return {'error':'Employee not found'}

@app.route('/employees/<int:employee_id>', methods=['DELETE'])
def delete_employee(employee_id):
    for employee in employees:
        if employee['id']== employee_id:
            employees.remove(employee)
            return {'data':'Employe has been removed'}
    return {'error':'Employee not found'}

if __name__== "__main__":
    app.run(debug = True).