Getting 405 While Scraping Controller.com

[zeeshan4971]

import scrapy
from scrapy_splash import SplashRequest

class ProxySpider(scrapy.Spider):
    name = "proxyss"

    def start_requests(self):
        urls = [
            'https://controller.com/',
        ]
        for url in urls:
             yield SplashRequest("https://www.controller.com/listings/aircraft/for-sale/list", self.parse,args={"http_method":'GET','wait': 5,'proxy': 'http://xxxxxxxxxx'})

    def parse(self, response):
        page = response.url.split("/")[-2]
        filename = 'proxy.html'
        with open(filename, 'wb') as f:
            f.write(response.body)
        self.log('Saved file %s' % filename)

Its works fine on homepage but this error only on internal pages.