Community creation with multiple words

[gauss2302]

I'm having the issue with community creation process: when I attempt to create a community with two or more words, ex. 'One Two', I have an output on the community's screen like: 'type Null is not a subtype of type Map<String, dynamic> in type cast".

Also, have the same issue with 'Editing Community' option as well.

Any suggestions for troubleshooting on it? Thanks in advance fellas!