Add errors section

Author: iobuhov

content/en/docs/marketplace/platform-supported-content/modules/data-widgets/data-grid-2.md

@@ -620,3 +620,33 @@ Legend:
 Resetting filters is possible using **Reset_Filter** and **Reset_All_Filters** actions available as part of the Data Widgets module. Setting up these actions is a manual process that requires creating a nanoflow and setting the name of the filter or data grid to be reset.
 
 The name of the filter or data grid can be found at **Properties** > **Common** > **Name**.
+
+## Troubleshooting runtime errors
+
+### Filter widgets errors
+
+> "The filter widget must be placed inside the column or header of the Data grid 2.0 or inside header of the Gallery widget."
+
+Widget placement is incorrect.
+
+**Solution**:
+Place widget inside Gallery header, Data Grid 2 header or Data Grid 2 column.
+
+> "Unable to get filter store. Check parent widget configuration."
+
+This error indicates that there is issue with widget settings. Most of the time this error happens when widget is placed in the header of Data Grid 2 or Gallery, but "Filter attributes" settings is still set to **Auto**.
+
+**Solution**:
+Switch widget attributes setting to **Custom** and configure the attribute for filtering.
+
+> "The [filter] is not compatible with [datatype] data type."
+
+This error indicates that attribute configured in the Data Grid 2 for column is not compatible with current filter type.
+
+**Solution**: Change filter to appropriate filter type. For example for string attributes use text filter.
+
+> "The attribute is not filterable. Please choose a different attribute."
+
+This error indicates that it's not possible to use current attribute for filtering due to technical limitations. 
+
+**Solution**: Read and understand why some attributes are filterable and other are not. Change the model or choose another attribute.