Error executing widget from template

[JBW]

Hi,

I'm follwing the instructions on https://devdocs.prestashop.com/1.7/modules/concepts/widgets/

to execute a widget on 1.7.5. with  {widget name="mywidget"} in a .tpl file. But I get an error that {widget} is unknown tag.

Any idea how to solve this?

Thanks

[elementChaosu]

Partly blind shot, but is your tpl rendered via controller, which implements widget interface? I run to this problem for this reason.
You can send widget content into tpl as variable like this:

$ModuleWithWidget = new ModuleWithWidget();
            $this->context->smarty->assign([
                'myWidget' => $ModuleWithWidget->renderWidget(),
            ]);

and then call $myWidget variable in tpl.