API error while trying to edit a Provider

[angulliab]

Getting this error message while trying to edit a Provider. The Zone dropdown also cannot load.

https://files.gitter.im/55c218780fc9f982beac502b/LgVj/image.png

Any ideas how to fix this?

[Fryguy]

@jeffibm @agrare Have you seen this one before?

@angulliab Which version?

[agrare]

I have not no