github - Error in model selection (gamm4) dredge function (MuMIn R package): family not recognised, model skipped -

I am trying to select models for generalized mixed blended models (Created by using the package in R. I I'm essentially following the piece of literature for model selection with Muhmin and gamm4.

I am making a model with 9 variables, and a random personal effect - which it likes Does:

  library (Gamm4) library (Mummian) southflu = g M4 (Otovidth ~ AG) + LagFinFSLdat_AnnEsts + FSL_months_Feb + LagFSLdat_Annual + LagFSLdat_Spring + LagFSL_matth_Oct + FinFSLdat_SummerDat + FinFSLdat_AutumnDat + LagFSL_months_Nov, Random = ~ (1 | FishName), Data = South)  

But when I try to use the dredge function, then it fails with the error message:

  (dd> - dredge (global) Model = SouthFull)) Error in dredge (global.model = SouthFull): Res is empty blank Also, there were 50 or more warnings (Use warnings to see the first 50) & gt; Warning () Warning message: 1: gamm4 :: gamm4 (...): Family not recognized (model 1 skipped) ... 50: in gamm4 :: gamm4 (...): Family not recognized Found (model 50 skipped)  

Is gamm4 model not identifying the family due to the problem with this submission?

Full Code & amp; The data can be found with me and the specific problem is in the code, as well as with specific warnings found on line 81.

Thank you in advance