Notice: Use of undefined constant

After enabling the module and navigating to "admin/config/people/access_filter/add", the following notices are shown:

Notice: Use of undefined constant ACCESS_FILTER_STATUS_ENABLED - assumed 'ACCESS_FILTER_STATUS_ENABLED' in access_filter_form_filter() (line 251 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_DENY_ACTION_403 - assumed 'ACCESS_FILTER_DENY_ACTION_403' in access_filter_form_filter() (line 257 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_TYPE_DRUPAL - assumed 'ACCESS_FILTER_PATH_TYPE_DRUPAL' in access_filter_form_filter() (line 316 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_TYPE_URI - assumed 'ACCESS_FILTER_PATH_TYPE_URI' in access_filter_form_filter() (line 317 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_MODIFIER_REGEX - assumed 'ACCESS_FILTER_PATH_MODIFIER_REGEX' in access_filter_form_filter() (line 321 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_MODIFIER_BLIND - assumed 'ACCESS_FILTER_PATH_MODIFIER_BLIND' in access_filter_form_filter() (line 322 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_TYPE_DRUPAL - assumed 'ACCESS_FILTER_PATH_TYPE_DRUPAL' in access_filter_form_filter() (line 326 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_TYPE_DRUPAL - assumed 'ACCESS_FILTER_PATH_TYPE_DRUPAL' in access_filter_form_filter() (line 327 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_TYPE_DRUPAL - assumed 'ACCESS_FILTER_PATH_TYPE_DRUPAL' in access_filter_form_filter() (line 328 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_TYPE_DRUPAL - assumed 'ACCESS_FILTER_PATH_TYPE_DRUPAL' in access_filter_form_filter() (line 329 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_MODIFIER_BLIND - assumed 'ACCESS_FILTER_PATH_MODIFIER_BLIND' in access_filter_form_filter() (line 329 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_TYPE_DRUPAL - assumed 'ACCESS_FILTER_PATH_TYPE_DRUPAL' in access_filter_form_filter() (line 330 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_MODIFIER_REGEX - assumed 'ACCESS_FILTER_PATH_MODIFIER_REGEX' in access_filter_form_filter() (line 330 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_MODIFIER_BLIND - assumed 'ACCESS_FILTER_PATH_MODIFIER_BLIND' in access_filter_form_filter() (line 330 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_TYPE_DRUPAL - assumed 'ACCESS_FILTER_PATH_TYPE_DRUPAL' in access_filter_form_filter() (line 331 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_MODIFIER_REGEX - assumed 'ACCESS_FILTER_PATH_MODIFIER_REGEX' in access_filter_form_filter() (line 331 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_TYPE_URI - assumed 'ACCESS_FILTER_PATH_TYPE_URI' in access_filter_form_filter() (line 332 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_TYPE_URI - assumed 'ACCESS_FILTER_PATH_TYPE_URI' in access_filter_form_filter() (line 333 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_TYPE_URI - assumed 'ACCESS_FILTER_PATH_TYPE_URI' in access_filter_form_filter() (line 334 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PATH_MODIFIER_REGEX - assumed 'ACCESS_FILTER_PATH_MODIFIER_REGEX' in access_filter_form_filter() (line 334 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PROCESS_TYPE_DENY - assumed 'ACCESS_FILTER_PROCESS_TYPE_DENY' in access_filter_form_filter() (line 349 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PROCESS_TYPE_ALLOW - assumed 'ACCESS_FILTER_PROCESS_TYPE_ALLOW' in access_filter_form_filter() (line 350 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PROCESS_TYPE_DENY - assumed 'ACCESS_FILTER_PROCESS_TYPE_DENY' in access_filter_form_filter() (line 356 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PROCESS_TYPE_ALLOW - assumed 'ACCESS_FILTER_PROCESS_TYPE_ALLOW' in access_filter_form_filter() (line 357 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_PROCESS_TYPE_DENY - assumed 'ACCESS_FILTER_PROCESS_TYPE_DENY' in access_filter_form_filter() (line 358 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_DENY_ACTION_403 - assumed 'ACCESS_FILTER_DENY_ACTION_403' in access_filter_form_filter() (line 370 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_DENY_ACTION_404 - assumed 'ACCESS_FILTER_DENY_ACTION_404' in access_filter_form_filter() (line 371 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_DENY_ACTION_301 - assumed 'ACCESS_FILTER_DENY_ACTION_301' in access_filter_form_filter() (line 372 of ~/modules/access_filter/access_filter.admin.inc).
Notice: Use of undefined constant ACCESS_FILTER_DENY_ACTION_302 - assumed 'ACCESS_FILTER_DENY_ACTION_302' in access_filter_form_filter() (line 373 of ~/modules/access_filter/access_filter.admin.inc).