Thanks for the report. We don't have a way to prevent Juju from accepting the config, but there are two things we can do in the charm to improve the experience here:
1. Accept "" and treat it the same as "{}"
2. Validate the config in the charm, and if it's invalid, enter Blocked status with a clear message
Thanks for the report. We don't have a way to prevent Juju from accepting the config, but there are two things we can do in the charm to improve the experience here:
1. Accept "" and treat it the same as "{}"
2. Validate the config in the charm, and if it's invalid, enter Blocked status with a clear message