GuzzleHttp\Exception\ServerException: Server error: `POST https://api.offi-cos.co.jp/oauth/token` resulted in a `502 Bad Gateway` response:
502 Bad Gateway
502 Bad Gateway
ngin (truncated...)
in /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php:113
Stack trace:
#0 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/guzzle/src/Middleware.php(72): GuzzleHttp\Exception\RequestException::create()
#1 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/promises/src/Promise.php(209): GuzzleHttp\Middleware::GuzzleHttp\{closure}()
#2 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/promises/src/Promise.php(158): GuzzleHttp\Promise\Promise::callHandler()
#3 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/promises/src/TaskQueue.php(52): GuzzleHttp\Promise\Promise::GuzzleHttp\Promise\{closure}()
#4 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/promises/src/Promise.php(251): GuzzleHttp\Promise\TaskQueue->run()
#5 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/promises/src/Promise.php(227): GuzzleHttp\Promise\Promise->invokeWaitFn()
#6 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/promises/src/Promise.php(272): GuzzleHttp\Promise\Promise->waitIfPending()
#7 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/promises/src/Promise.php(229): GuzzleHttp\Promise\Promise->invokeWaitList()
#8 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/promises/src/Promise.php(69): GuzzleHttp\Promise\Promise->waitIfPending()
#9 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/guzzle/src/Client.php(189): GuzzleHttp\Promise\Promise->wait()
#10 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/vendor/guzzlehttp/guzzle/src/ClientTrait.php(95): GuzzleHttp\Client->request()
#11 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/functions-api.php(47): GuzzleHttp\Client->post()
#12 /home/offi-cos2012/www/offi-cos.co.jp/public/libs/functions-api.php(142): get_access_token()
#13 /home/offi-cos2012/www/offi-cos.co.jp/public/bukken/detail.php(15): get_bukken_item()
#14 {main}