Hello developer of Buildr Features,
I just added the buildr theme to my site yesterday and also added the buildr features plugin. Since the new update of wordpress to 5.2 there seems to be an issue with the plugins interface with wordpress. when it is activated it will cause a fatal error and prevent any other themes from being accessed or used. i’m not sure what the bug is but i would really like to use the theme and plugin with the updated wordpress.