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# 環境

  * pyppeteer 1.0.2
  * Python 3.10.2
  * Ubuntu 22.04 
    * VirtualBox v7.0.6 r155176を利用している
    * ホストOSはWindows11 Pro

# 問題点

pyppeteerでブラウザを操作したいです。  
以下のコードを実行したところ、`page.goto`を実行する前で、処理が止まりました。

# 質問

下記のコードが途中で処理が止まってしまう原因と解決策を教えていただきたいです。

以下に記載のログで、最終行の`RECV: {"id":4,"result":{}}`以降は、1分以上待ってもログは出力されませんでした。

# 補足

先日Ubuntu18.04から22.04にバージョンアップしました。  
Ubuntu18.04のときは上記のようなコード（厳密に一緒ではないが）は動きました。  
Ubuntuのバージョンアップにより、何かが変わったのでしょうか？

* * *

**現状のコード:**

```

    import os
    import asyncio
    from pyppeteer import launch
    from pyppeteer.browser import Browser
    from pyppeteer.page import Page
    from typing import Optional
    import time
    
    import logging
    
    logger = logging.getLogger(__name__)
    
    logging.basicConfig(format='%(levelname)-8s : %(asctime)s : %(name)s : %(message)s', level=logging.DEBUG)
    
    
    async def main():
        logger.info("start 'launch()'")
        browser: Browser = await launch()
        logger.info("start 'newPage()'")
        page: Page = await browser.newPage()
        logger.info("start 'goto()'")
        page.goto("https://www.google.com/")
        logger.info(f"title='{page.title}'")
        await browser.close()
    
    
    if __name__ == "__main__":
        asyncio.new_event_loop().run_until_complete(main())
    
```

**ログ:**

```

    $ python sample.py
    DEBUG    : 2023-02-10 02:40:36,722 : asyncio : Using selector: EpollSelector
    INFO     : 2023-02-10 02:40:36,723 : __main__ : start 'launch()'
    INFO     : 2023-02-10 02:40:36,962 : pyppeteer.launcher : Browser listening on: ws://127.0.0.1:44795/devtools/browser/41f9db60-def6-4e84-86bb-47a8238e1269
    DEBUG    : 2023-02-10 02:40:36,962 : pyppeteer.connection.Connection : SEND: {"id": 1, "method": "Target.setDiscoverTargets", "params": {"discover": true}}
    DEBUG    : 2023-02-10 02:40:36,963 : websockets.client : = connection is CONNECTING
    DEBUG    : 2023-02-10 02:40:36,963 : websockets.client : > GET /devtools/browser/41f9db60-def6-4e84-86bb-47a8238e1269 HTTP/1.1
    DEBUG    : 2023-02-10 02:40:36,963 : websockets.client : > Host: 127.0.0.1:44795
    DEBUG    : 2023-02-10 02:40:36,964 : websockets.client : > Upgrade: websocket
    DEBUG    : 2023-02-10 02:40:36,964 : websockets.client : > Connection: Upgrade
    DEBUG    : 2023-02-10 02:40:36,964 : websockets.client : > Sec-WebSocket-Key: x249CRPQgAIEzSuRpwfwWA==
    DEBUG    : 2023-02-10 02:40:36,964 : websockets.client : > Sec-WebSocket-Version: 13
    DEBUG    : 2023-02-10 02:40:36,964 : websockets.client : > Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits
    DEBUG    : 2023-02-10 02:40:36,964 : websockets.client : > User-Agent: Python/3.10 websockets/10.4
    DEBUG    : 2023-02-10 02:40:36,968 : websockets.client : < HTTP/1.1 101 WebSocket Protocol Handshake
    DEBUG    : 2023-02-10 02:40:36,968 : websockets.client : < Upgrade: WebSocket
    DEBUG    : 2023-02-10 02:40:36,968 : websockets.client : < Connection: Upgrade
    DEBUG    : 2023-02-10 02:40:36,969 : websockets.client : < Sec-WebSocket-Accept: 1Vff/ccWM9WOTWKdZigUywH95zI=
    DEBUG    : 2023-02-10 02:40:36,971 : websockets.client : < Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits=15
    DEBUG    : 2023-02-10 02:40:36,972 : websockets.client : = connection is OPEN
    DEBUG    : 2023-02-10 02:40:36,973 : websockets.client : > TEXT '{"id": 1, "method": "Target.setDiscoverTargets"...s": {"discover": true}}' [78 bytes]
    DEBUG    : 2023-02-10 02:40:36,980 : websockets.client : < TEXT '{"method":"Target.targetCreated","params":{"tar...":"","attached":true}}}' [162 bytes]
    DEBUG    : 2023-02-10 02:40:36,981 : websockets.client : < TEXT '{"method":"Target.targetCreated","params":{"tar...:"","attached":false}}}' [163 bytes]
    DEBUG    : 2023-02-10 02:40:36,981 : websockets.client : < TEXT '{"method":"Target.targetCreated","params":{"tar...583B09AB22E3A6BCD11"}}}' [221 bytes]
    DEBUG    : 2023-02-10 02:40:36,983 : websockets.client : < TEXT '{"id":1,"result":{}}' [20 bytes]
    DEBUG    : 2023-02-10 02:40:36,984 : pyppeteer.connection.Connection : RECV: {"method":"Target.targetCreated","params":{"targetInfo":{"targetId":"28dc2d38-5e24-42c2-be8e-f584b819d067","type":"browser","title":"","url":"","attached":true}}}
    DEBUG    : 2023-02-10 02:40:36,985 : pyppeteer.connection.Connection : RECV: {"method":"Target.targetCreated","params":{"targetInfo":{"targetId":"2e284177-55a4-4747-936f-8fcfce4daa84","type":"browser","title":"","url":"","attached":false}}}
    DEBUG    : 2023-02-10 02:40:36,986 : pyppeteer.connection.Connection : RECV: {"method":"Target.targetCreated","params":{"targetInfo":{"targetId":"8FBB603CDE1315D86EB3E46D95B602D5","type":"page","title":"","url":"about:blank","attached":false,"browserContextId":"59BFB1FBAA9D2583B09AB22E3A6BCD11"}}}
    DEBUG    : 2023-02-10 02:40:36,987 : pyppeteer.connection.Connection : RECV: {"id":1,"result":{}}
    INFO     : 2023-02-10 02:40:36,988 : __main__ : start 'newPage()'
    DEBUG    : 2023-02-10 02:40:36,989 : pyppeteer.connection.Connection : SEND: {"id": 2, "method": "Target.createTarget", "params": {"url": "about:blank"}}
    DEBUG    : 2023-02-10 02:40:36,989 : websockets.client : > TEXT '{"id": 2, "method": "Target.createTarget", "par...{"url": "about:blank"}}' [76 bytes]
    DEBUG    : 2023-02-10 02:40:36,998 : websockets.client : < TEXT '{"method":"Target.targetCreated","params":{"tar...583B09AB22E3A6BCD11"}}}' [210 bytes]
    DEBUG    : 2023-02-10 02:40:37,000 : pyppeteer.connection.Connection : RECV: {"method":"Target.targetCreated","params":{"targetInfo":{"targetId":"341CA1FE1641430B96936CFA2DCA14FC","type":"page","title":"","url":"","attached":false,"browserContextId":"59BFB1FBAA9D2583B09AB22E3A6BCD11"}}}
    DEBUG    : 2023-02-10 02:40:37,002 : websockets.client : < TEXT '{"id":2,"result":{"targetId":"341CA1FE1641430B96936CFA2DCA14FC"}}' [65 bytes]
    DEBUG    : 2023-02-10 02:40:37,003 : pyppeteer.connection.Connection : RECV: {"id":2,"result":{"targetId":"341CA1FE1641430B96936CFA2DCA14FC"}}
    DEBUG    : 2023-02-10 02:40:37,008 : websockets.client : < TEXT '{"method":"Target.targetInfoChanged","params":{...583B09AB22E3A6BCD11"}}}' [225 bytes]
    DEBUG    : 2023-02-10 02:40:37,010 : websockets.client : < TEXT '{"method":"Target.targetCrashed","params":{"tar...ashed","errorCode":31}}' [124 bytes]
    DEBUG    : 2023-02-10 02:40:37,011 : pyppeteer.connection.Connection : RECV: {"method":"Target.targetInfoChanged","params":{"targetInfo":{"targetId":"341CA1FE1641430B96936CFA2DCA14FC","type":"page","title":"","url":"about:blank","attached":false,"browserContextId":"59BFB1FBAA9D2583B09AB22E3A6BCD11"}}}
    DEBUG    : 2023-02-10 02:40:37,013 : pyppeteer.connection.Connection : SEND: {"id": 3, "method": "Target.attachToTarget", "params": {"targetId": "341CA1FE1641430B96936CFA2DCA14FC"}}
    DEBUG    : 2023-02-10 02:40:37,013 : pyppeteer.connection.Connection : RECV: {"method":"Target.targetCrashed","params":{"targetId":"341CA1FE1641430B96936CFA2DCA14FC","status":"crashed","errorCode":31}}
    DEBUG    : 2023-02-10 02:40:37,015 : websockets.client : > TEXT '{"id": 3, "method": "Target.attachToTarget", "p...430B96936CFA2DCA14FC"}}' [104 bytes]
    DEBUG    : 2023-02-10 02:40:37,016 : websockets.client : < TEXT '{"method":"Target.targetInfoChanged","params":{...583B09AB22E3A6BCD11"}}}' [224 bytes]
    DEBUG    : 2023-02-10 02:40:37,017 : websockets.client : < TEXT '{"method":"Target.attachedToTarget","params":{"...ingForDebugger":false}}' [297 bytes]
    DEBUG    : 2023-02-10 02:40:37,018 : websockets.client : < TEXT '{"id":3,"result":{"sessionId":"5760D9CD965DC546B37FADB72DDFB0F3"}}' [66 bytes]
    DEBUG    : 2023-02-10 02:40:37,019 : pyppeteer.connection.Connection : RECV: {"method":"Target.targetInfoChanged","params":{"targetInfo":{"targetId":"341CA1FE1641430B96936CFA2DCA14FC","type":"page","title":"","url":"about:blank","attached":true,"browserContextId":"59BFB1FBAA9D2583B09AB22E3A6BCD11"}}}
    DEBUG    : 2023-02-10 02:40:37,021 : pyppeteer.connection.Connection : RECV: {"method":"Target.attachedToTarget","params":{"sessionId":"5760D9CD965DC546B37FADB72DDFB0F3","targetInfo":{"targetId":"341CA1FE1641430B96936CFA2DCA14FC","type":"page","title":"","url":"about:blank","attached":true,"browserContextId":"59BFB1FBAA9D2583B09AB22E3A6BCD11"},"waitingForDebugger":false}}
    DEBUG    : 2023-02-10 02:40:37,022 : pyppeteer.connection.Connection : RECV: {"id":3,"result":{"sessionId":"5760D9CD965DC546B37FADB72DDFB0F3"}}
    DEBUG    : 2023-02-10 02:40:37,023 : pyppeteer.connection.CDPSession : SEND: {"id": 1, "method": "Page.enable", "params": null}
    DEBUG    : 2023-02-10 02:40:37,024 : pyppeteer.connection.Connection : SEND: {"id": 4, "method": "Target.sendMessageToTarget", "params": {"sessionId": "5760D9CD965DC546B37FADB72DDFB0F3", "message": "{\"id\": 1, \"method\": \"Page.enable\", \"params\": null}"}}
    DEBUG    : 2023-02-10 02:40:37,025 : websockets.client : > TEXT '{"id": 4, "method": "Target.sendMessageToTarget... \\"params\\": null}"}}' [183 bytes]
    DEBUG    : 2023-02-10 02:40:37,027 : websockets.client : < TEXT '{"id":4,"result":{}}' [20 bytes]
    DEBUG    : 2023-02-10 02:40:37,029 : pyppeteer.connection.Connection : RECV: {"id":4,"result":{}}
    
```

# 追記

kuzira5186さんの回答で`page.goto`に`await`を付け忘れていたことに気付いたので、`await`を付けて再度実行ました。  
しかし、、変らず処理が途中で止まり、pythonコマンドは終了しませんでした。
CC BY-SA 4.0
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question
python pyppeteer
pyppeteer: `Page.newPage`関数の処理が途中で止まってしまう
`page.goto` も `await` が必要ですね！別の問題ならすみません！

```

    await page.goto("https://www.google.com/")
    
```
CC BY-SA 4.0
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answer
metropolisさんのコメント通り、`launch`関数に`args=['--no-sandbox']`を指定したら、期待通り動くようになりました。

```

    import asyncio
    from pyppeteer import launch
    from pyppeteer.browser import Browser
    from pyppeteer.page import Page
    
    import logging
    
    logger = logging.getLogger(__name__)
    
    logging.basicConfig(format="%(levelname)-8s : %(asctime)s : %(name)s : %(message)s", level=logging.INFO)
    
    
    async def main():
        logger.info("start 'launch()'")
        browser: Browser = await launch(args=["--no-sandbox"])
        logger.info("start 'newPage()'")
        page: Page = await browser.newPage()
        logger.info("start 'goto()'")
        await page.goto("https://www.google.com/")
        logger.info(f"title='{await page.title()}'")
        await browser.close()
    
    
    if __name__ == "__main__":
        asyncio.new_event_loop().run_until_complete(main())
    
```

```

    $ python sample.py
    INFO     : 2023-03-14 08:09:35,321 : __main__ : start 'launch()'
    INFO     : 2023-03-14 08:09:35,445 : pyppeteer.launcher : Browser listening on: ws://127.0.0.1:34889/devtools/browser/f12e7475-1b6d-481b-9cc6-55abbbc1ed8d
    INFO     : 2023-03-14 08:09:35,449 : __main__ : start 'newPage()'
    INFO     : 2023-03-14 08:09:35,535 : __main__ : start 'goto()'
    INFO     : 2023-03-14 08:09:36,757 : __main__ : title='Google'
    INFO     : 2023-03-14 08:09:36,758 : pyppeteer.launcher : terminate chrome process...
    
```
CC BY-SA 4.0
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