Error messages on agent.proxycfg

#### Overview of the Issue

We are seeing some error messages on consul when deploying connect services with nomad.
Are these logs normal?

### Consul info for both Client and Server

consul v1.7.2

### Log Fragments

```
Mar 26 11:13:30 wrkr-b78b7e82-3b consul: {"@level":"error","@message":"watch error","@module":"agent.proxycfg","@timestamp":"2020-03-26T11:13:30.090703Z","error":"invalid type for service checks response: cache.FetchResult, want: []structs.CheckType","id":"service-http-checks:_nomad-task-2d5ea1b0-dee8-df84-6869-31494a2e9941-group-test-test-10080"}
Mar 26 11:23:36 wrkr-b78b7e82-3b consul: {"@level":"error","@message":"watch error","@module":"agent.proxycfg","@timestamp":"2020-03-26T11:23:36.243619Z","error":"invalid type for service checks response: cache.FetchResult, want: []structs.CheckType","id":"service-http-checks:_nomad-task-c3f41e0f-a5d1-2fb9-3883-82be8f092377-group-test-test-10080"}
Mar 26 11:25:05 wrkr-b78b7e82-3b consul: {"@level":"error","@message":"watch error","@module":"agent.proxycfg","@timestamp":"2020-03-26T11:25:05.531741Z","error":"invalid type for service checks response: cache.FetchResult, want: []structs.CheckType","id":"service-http-checks:_nomad-task-708d62cf-e14c-1011-125b-65c04d48ce58-group-test-test-10080"}
Mar 26 11:53:11 wrkr-b78b7e82-3b consul: {"@level":"error","@message":"watch error","@module":"agent.proxycfg","@timestamp":"2020-03-26T11:53:11.846211Z","error":"invalid type for service checks response: cache.FetchResult, want: []structs.CheckType","id":"service-http-checks:_nomad-task-8c5caf4b-0a5a-d144-195d-04a7c029ea77-group-test-test-10080"}
Mar 26 12:24:37 wrkr-b78b7e82-3b consul: {"@level":"error","@message":"watch error","@module":"agent.proxycfg","@timestamp":"2020-03-26T12:24:37.160438Z","error":"invalid type for service checks response: cache.FetchResult, want: []structs.CheckType","id":"service-http-checks:_nomad-task-8d93ccd3-d883-e849-9d8e-64d9a8e1ad23-group-test-test-10080"}
Mar 26 12:34:46 wrkr-b78b7e82-3b consul: {"@level":"error","@message":"watch error","@module":"agent.proxycfg","@timestamp":"2020-03-26T12:34:46.001895Z","error":"invalid type for service checks response: cache.FetchResult, want: []structs.CheckType","id":"service-http-checks:_nomad-task-8a1a7924-672a-b994-ef02-9ebffaf2398e-group-test-test-10080"}
```