Fabric Notebook Error, please help!

Hi, can you create a custom environment in Fabric and change the spark settings there? You can change the settings in the spark properties field as shown in the screenshot. You can select that custom environment in your notebook.

The screenshot is part of the "Environment"-item which you can create by clicking on "+ New item" in your workspace and search for "environment". Afterwards you can attach the environment in the "Workspace settings" and "Data Engineering/Science" / "Spark settings" / "Environment". More information can be found here: Create, configure, and use an environment in Fabric - Microsoft Fabric | Microsoft Learn