Проблема с asyncio

#!/usr/bin/python3
import asyncio
import os
import sqlite3
import uuid
 
from aiohttp import web
 
 
class Fake():
    def __init__(self, port):
        self.port = port
    DBNAME = ':memory:'
    INIT_SQL = [
        '''create table input (
          id integer primary key autoincrement,
          doc_type text not null,
          content text not null,
          reply_id text not null
        )''',
        '''create table output (
          id integer primary key autoincrement,
          doc_type text not null,
          content text not null,
          reply_id text not null
        )''',
    ]
 
    def create_db(self):
        conn = sqlite3.connect(self.DBNAME)
        c = conn.cursor()
        for sql in self.INIT_SQL:
            c.execute(sql)
        conn.commit()
        conn.close()
 
    def init_db(self):
        if not os.path.isfile(self.DBNAME):
            self.create_db()
 
    def add_input(self, doc_type, content, reply_id):
        conn = sqlite3.connect(self.DBNAME)
        c = conn.cursor()
        c.execute("insert into input (doc_type, content, reply_id) values (?, ?, ?)", (doc_type, content, reply_id))
        conn.commit()
        conn.close()
 
    def make_output(self, reply_id):
        return  reply_id
 
    def make_error(self, doc_type):
        return doc_type
 
    def is_valid(self, doc_type):
        return True
 
    async def opt_in(self, request):
        doc_type = request.match_info.get('type')
        if not self.is_valid(doc_type):
            return web.Response(body=self.make_error(doc_type))
        data = await request.post()
        content = data['xml_file'].file.read()
        reply_id = str(uuid.uuid4())
        self.add_input(doc_type, content, reply_id)
        return web.Response(body=self.make_output(reply_id))
 
    async def run(self):
        app = web.Application()
        app.add_routes([web.post('/opt/in/{type}', self.opt_in)])
        self.init_db()
        task = asyncio.create_task(web.run_app(app, host='localhost', port=self.port))
        await task
 
a = Fake(8087)
asyncio.run(a.run())
 
aa = Fake(8088)
asyncio.run(aa.run())