Unknown column 'updatedDtm' in 'field list' code example

Example 1: Unknown column '.updated_at'

In the model, write the below code;
public $timestamps = false;

Explanation : By default laravel will expect created_at & updated_at column 
in your table. By making it to false it will override the default setting.

Example 2: Column not found: 1054 Unknown column 'updated_at' in 'field list

public $timestamps = false;