I create a new template with below code:

        {{ workshop:entry:create collection="mycollection" }}
        <input type="text" name="title" value="{{ old:title }}">
        <textarea name="content">{{ old:content }}</textarea>
        <input type="submit">
        {{ /workshop:entry:create }}

Like show in doc.

Then I was not sure how to create a new url that point to my custom template. So I simple create a new content type "workshop" by using my new template. Then I create a new entry in the workshop content type.

But when I open the page appear whoops error message.

This is from error log:

[2018-09-16 13:30:13] production.ERROR: exception 'Symfony\Component\Debug\Exception\FatalErrorException' with message 'syntax error, unexpected '->' (T_OBJECT_OPERATOR)' in /home/zoroaster/projects/statamic/site/addons/Workshop/WorkshopTags.php:273