After registering a WFS data source successfully and add feature class to the legend no features are displayed in the map window.
Error message appears in Portal instance log:
Request parsing failed
Parsing failed for BBOX: java.lang.NullPointerException
This error on WFS indicates that the bounding box (bbox) is outside of the current map range. By default a Geospatial Portal instance will have display mode for WFS set to 'Limit by Map Range'. When this display mode is enabled and the WFS bbox is outside of the current range the symptoms presented above will be present.
To resolve this issue/error please click on the drop down arrow on the added WFS legend entry. Here it will be found 'Display Mode'. 'Limit by Map Range' is enabled by default. Uncheck 'Limit by Map Range' and fit layer to the WFS legend entry. The WFS features should then display in the Portal map window.