No context provider found for value of type string. Use null as 1st argument of FormHelper::create() to create a context-less form. 📋

RuntimeException
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        }
        $data += ['entity' => null];
        return $this->_context $this->contextFactory()
            ->get($this->_View->getRequest(), $data);
    }
    /**
     Add a new widget to FormHelper.

If you want to customize this error message, create templates\Error\error500.php