Pulsar manager UI gives error when trying to add environments

```
tls.enabled=false
tls.keystore=keystore-file
tls.keystore.password=keystore-file-password
tls.hostname.verifier=false
```

The issue provides only a TLS configuration snippet and says that adding environments produces an error; no file, entry point, error output, or test is named. Start by reproducing the environment-add flow with these settings, then identify the failing UI path and add coverage for the observed failure before confirming the environment can be added successfully.

Written by the indexing model from the issue text.