Running reports the following warnings/errors.
FILE: ./tour_ui_8.x-1.x/tests/src/Functional/TourUITest.php
69 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
74 | WARNING | [ ] Line exceeds 80 characters; contains 81 characters
75 | WARNING | [ ] Line exceeds 80 characters; contains 181 characters
77 | WARNING | [x] There must be no blank line following an inline comment
77 | WARNING | [ ] There must be no blank line following an inline comment
77 | ERROR | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
96 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
97 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
102 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
103 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
104 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
112 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
128 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
143 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
144 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
148 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
149 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
150 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
151 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
152 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
155 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
170 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
171 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
178 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
185 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
197 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
206 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
FILE: ./tour_ui_8.x-1.x/src/TourListBuilder.php
18 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
19 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
20 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
21 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
22 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
49 | ERROR | [x] There should be no white space after an opening "("
49 | ERROR | [x] There should be no white space before a closing ")"
85 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
90 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and
| | $this->t() instead
FILE: ./tour_ui_8.x-1.x/src/Form/TourForm.php
200 | ERROR | [ ] The array declaration extends to column 97 (the limit is 80). The array content should be split up over
| | multiple lines
205 | ERROR | [ ] The array declaration extends to column 97 (the limit is 80). The array content should be split up over
| | multiple lines
226 | ERROR | [x] Use null coalesce operator instead of ternary operator.
290 | ERROR | [ ] The array declaration extends to column 113 (the limit is 80). The array content should be split up over
| | multiple lines
299 | WARNING | [x] 'TODO: validate the routes' should match the format '@todo Fix problem X here.'
299 | ERROR | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
300 | WARNING | [ ] Unused variable $routes.
318 | ERROR | [x] Doc comment long description must end with a full stop
320 | ERROR | [ ] Missing parameter comment
322 | ERROR | [ ] Description for the @return value is missing
325 | ERROR | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
328 | ERROR | [x] Inline comments must start with a capital letter
328 | ERROR | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
332 | ERROR | [x] TRUE, FALSE and NULL must be uppercase; expected "NULL" but found "null"
333 | ERROR | [x] Expected 1 space after FOREACH keyword; 0 found
337 | ERROR | [x] Expected 1 space before "!=="; 0 found
339 | ERROR | [x] Expected 1 space before "-"; 0 found
339 | ERROR | [x] Expected 1 space after "-"; 0 found
341 | ERROR | [x] Expected newline after closing brace
343 | ERROR | [x] Inline comments must start with a capital letter
343 | ERROR | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
346 | ERROR | [x] list(...) is forbidden, use [...] instead.
FILE: ./tour_ui_8.x-1.x/src/Form/TourTipDeleteForm.php
86 | ERROR | The array declaration extends to column 151 (the limit is 80). The array content should be split up over multiple
| | lines
124 | ERROR | The array declaration extends to column 149 (the limit is 80). The array content should be split up over multiple
| | lines
FILE: ./tour_ui_8.x-1.x/src/Controller/TourUIController.php
83 | ERROR | [ ] Missing parameter comment
85 | ERROR | [ ] Description for the @return value is missing
92 | ERROR | [x] Expected 1 space before "="; 0 found
92 | ERROR | [x] Expected 1 space after "="; 0 found
101 | WARNING | [ ] Unused variable $route.
FILE: ./tour_ui_8.x-1.x/src/Plugin/tour_ui/tip/TipPluginTextExtended.php
28 | WARNING | [x] 'TODO: Remove this method when' should match the format '@todo Fix problem X here.'
FILE: ./tour_ui_8.x-1.x/README.md
12 | WARNING | Line exceeds 80 characters; contains 93 characters
20 | WARNING | Line exceeds 80 characters; contains 212 characters
25 | WARNING | Line exceeds 80 characters; contains 88 characters
26 | WARNING | Line exceeds 80 characters; contains 89 characters
28 | WARNING | Line exceeds 80 characters; contains 363 characters
29 | WARNING | Line exceeds 80 characters; contains 193 characters
30 | WARNING | Line exceeds 80 characters; contains 107 characters
32 | WARNING | Line exceeds 80 characters; contains 216 characters
33 | WARNING | Line exceeds 80 characters; contains 153 characters
35 | WARNING | Line exceeds 80 characters; contains 95 characters
37 | WARNING | Line exceeds 80 characters; contains 171 characters
47 | WARNING | Line exceeds 80 characters; contains 133 characters
51 | WARNING | Line exceeds 80 characters; contains 144 characters
66 | WARNING | Line exceeds 80 characters; contains 154 characters
These warnings/errors must be fixed.