panic: request error: Internal Server Error ("{\n\t\"error\": {\n\t\t\"message\": \"Key may not be empty. (See https://help.ably.io/error/50000 for help.)\",\n\t\t\"code\": 50000,\n\t\t\"statusCode\": 500,\n\t\t\"nonfatal\": false,\n\t\t\"href\": \"https://help.ably.io/error/50000\",\n\t\t\"serverId\": \"frontend.b9d8.2.us-east-1-A.i-0cd410b371ab38483.e7dwZyiRABLriy\"\n\t}\n}") /opt/hostedtoolcache/go/1.19.6/x64/src/testing/testing.go:1396 +0x372 /opt/hostedtoolcache/go/1.19.6/x64/src/testing/testing.go:1399 +0x5f0 /opt/hostedtoolcache/go/1.19.6/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:115 +0x52 /home/runner/work/ably-go/ably-go/ably/auth_integration_test.go:110 +0x394 /opt/hostedtoolcache/go/1.19.6/x64/src/testing/testing.go:1446 +0x217 /opt/hostedtoolcache/go/1.19.6/x64/src/testing/testing.go:1493 +0x75e