什么导致这个“条件长度> 1，只使用第一个元素”glmmLASSO错误？

I am using the glmmLASSO package in R to run a penalized regression. As far as I can tell I am using the exact same syntax as the demo that comes with the package, so I am stumped as to why I am getting an error. Any help would be greatly appreciated. (I know that there are many questions on the site about this error, but the ones I read didn't seem to help.)I am using the glmmLASSO package in R to run a