vlib/v/checker/tests/option_str_call.vv:7:10: error: Option type cannot be called directly, you should unwrap it first
    5 |     footer := doc.get_tags_by_class_name('Box-footer')[0]
    6 |     invalid := footer.get_tag_by_class_name('invalid')
    7 |     println(invalid.str())
      |             ~~~~~~~
    8 | }
vlib/v/checker/tests/option_str_call.vv:7:2: error: `println` can not print void expressions
    5 |     footer := doc.get_tags_by_class_name('Box-footer')[0]
    6 |     invalid := footer.get_tag_by_class_name('invalid')
    7 |     println(invalid.str())
      |     ~~~~~~~~~~~~~~~~~~~~~~
    8 | }
