The error log appears once a second, and the log file grows quickly!

What’s the situation and how to solve it? Thank you!

[core] Error: GuzzleHttp\Exception\ConnectException: cURL error 28: Connection timed out after 10001 milliseconds (see http://curl.haxx.se/libcurl/c/libcurl-errors.html) at <>

  1. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php line 149
    GuzzleHttp\Handler\CurlFactory::createRejection(GuzzleHttp\Handl … l}, {errno: 28,error … 2})
  2. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php line 102
    GuzzleHttp\Handler\CurlFactory::finishError(GuzzleHttp\Handler\CurlHandler {}, GuzzleHttp\Handl … l}, GuzzleHttp\Handler\CurlFactory {})
  3. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Handler/CurlHandler.php line 43
    GuzzleHttp\Handler\CurlFactory::finish(GuzzleHttp\Handler\CurlHandler {}, GuzzleHttp\Handl … l}, GuzzleHttp\Handler\CurlFactory {})
  4. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Handler/Proxy.php line 28
    GuzzleHttp\Handler\CurlHandler->__invoke("*** sensitive parameter replaced ", " sensitive parameter replaced ***")
  5. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Handler/Proxy.php line 51
    GuzzleHttp\Handler\Proxy::GuzzleHttp\Handler{closure}("*** sensitive parameters replaced ***")
  6. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php line 66
    GuzzleHttp\Handler\Proxy::GuzzleHttp\Handler{closure}("*** sensitive parameters replaced ***")
  7. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Middleware.php line 30
    GuzzleHttp\PrepareBodyMiddleware->__invoke("*** sensitive parameter replaced ", " sensitive parameter replaced ***")
  8. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/RedirectMiddleware.php line 70
    GuzzleHttp\Middleware::GuzzleHttp{closure}("*** sensitive parameters replaced ***")
  9. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Middleware.php line 60
    GuzzleHttp\RedirectMiddleware->__invoke("*** sensitive parameter replaced ", " sensitive parameter replaced ***")
  10. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/HandlerStack.php line 67
    GuzzleHttp\Middleware::GuzzleHttp{closure}("*** sensitive parameters replaced ***")
  11. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Client.php line 277
    GuzzleHttp\HandlerStack->__invoke("*** sensitive parameter replaced ", " sensitive parameter replaced ***")
  12. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Client.php line 125
    GuzzleHttp\Client->transfer("*** sensitive parameter replaced ", " sensitive parameter replaced ***")
  13. /usr/local/www/nextcloud/3rdparty/guzzlehttp/guzzle/src/Client.php line 131
    GuzzleHttp\Client->requestAsync(“post”, GuzzleHttp\Psr7\Uri {}, {verify: "/NcDat … }})
  14. /usr/local/www/nextcloud/lib/private/Http/Client/Client.php line 217
    GuzzleHttp\Client->request(“post”, “https://xxxx. … j”, {proxy: null,ver … e})
  15. /usr/local/www/nextcloud/apps/activity/lib/BackgroundJob/RemoteActivity.php line 89
    OC\Http\Client\Client->post(“https://xxxx. … j”, {timeout: 10,con … }})
  16. <>
    OCA\Activity\BackgroundJob\RemoteActivity->sendActivity(“xxx@xxxx.top”, “6B3EQDjVgVMTZQj”, “/2018年10月马拉松/ … 2”, “file_created”, 1540012998, “xxx@xxxx.cn:xxx”)
  17. /usr/local/www/nextcloud/apps/activity/lib/BackgroundJob/RemoteActivity.php line 45
    call_user_func_array([OCA\Activity\Ba … "], ["xxxx@xxxx.to … "])
  18. /usr/local/www/nextcloud/lib/private/BackgroundJob/Job.php line 61
    OCA\Activity\BackgroundJob\RemoteActivity->run(["xxx@xxxx.to … "])
  19. /usr/local/www/nextcloud/lib/private/BackgroundJob/QueuedJob.php line 44
    OC\BackgroundJob\Job->execute(OC\BackgroundJob\JobList {}, OC\Log {})
  20. /usr/local/www/nextcloud/cron.php line 148
    OC\BackgroundJob\QueuedJob->execute(OC\BackgroundJob\JobList {}, OC\Log {})

GET /cron.php
from xx.xxx.xxx.xxx at 2020-03-11T03:48:07+00:00