Hi,

This error often happens when you're trying to set up security for a model that doesn't exist. First, make sure the model is loaded. You can check this in the Settings->Technical-> Models. Also, ensure that you've added the model's file name in the __init__.py file inside the models folder. Similarly, make sure the models folder is added in the main __init__.py file. Double-check these files to ensure everything is properly included.

Hope it helps

Check the security file ir.model.access.csv file.. It has some problems... Either cross check with model names.. model_xyz_model -- this is required field to enter..