panic: request error: Bad Gateway ("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\n<HTML><HEAD><META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=iso-8859-1\">\n<TITLE>ERROR: The request could not be satisfied</TITLE>\n</HEAD><BODY>\n<H1>502 ERROR</H1>\n<H2>The request could not be satisfied.</H2>\n<HR noshade size=\"1px\">\nThe origin closed the connection.\nWe can't connect to the server for this app or website at this time. There might be too much traffic or a configuration error. Try again later, or contact the app or website owner.\n<BR clear=\"all\">\nIf you provide content to customers through CloudFront, you can find steps to troubleshoot and help prevent this error by reviewing the CloudFront documentation.\n<BR clear=\"all\">\n<HR noshade size=\"1px\">\n<PRE>\nGenerated by cloudfront (CloudFront)\nRequest ID: maswi1bIv0XrEMgPEEVyNDgAAqLZFMGChF58ndfBs19DHrMF8E_ANw==\n</PRE>\n<ADDRESS>\n</ADDRESS>\n</BODY></HTML>") /opt/hostedtoolcache/go/1.19.4/x64/src/testing/testing.go:1396 +0x372 /opt/hostedtoolcache/go/1.19.4/x64/src/testing/testing.go:1399 +0x5f0 /opt/hostedtoolcache/go/1.19.4/x64/src/runtime/panic.go:890 +0x262 /home/runner/work/ably-go/ably-go/ablytest/sandbox.go:126 +0x72 /home/runner/work/ably-go/ably-go/ablytest/sandbox.go:106 +0x52 /home/runner/work/ably-go/ably-go/ably/realtime_channel_integration_test.go:102 +0x237 /opt/hostedtoolcache/go/1.19.4/x64/src/testing/testing.go:1446 +0x217 /opt/hostedtoolcache/go/1.19.4/x64/src/testing/testing.go:1493 +0x75e