Notice: Trying to access array offset on value of type null in /var/www/html/oyunlagelecek/mod/tincanlaunch/view.php on line 108

Error attempting to get registration data from State API.

object(TinCan\LRSResponse)#1572 (3) {
  ["success"]=>
  bool(false)
  ["content"]=>
  string(941) "Request failed: ErrorException: fopen(/activities/state?activityId=http%3A%2F%2F60F68tc9Wk9_course_id&agent=%7B%22objectType%22%3A%22Agent%22%2C%22name%22%3A%22Guest%20user%20%20%22%2C%22mbox%22%3A%22mailto%3Aroot%40localhost%22%7D&stateId=http%3A%2F%2Ftincanapi.co.uk%2Fstateapikeys%2Fregistrations): failed to open stream: No such file or directory in /var/www/html/oyunlagelecek/mod/tincanlaunch/TinCanPHP/src/RemoteLRS.php:150
Stack trace:
#0 [internal function]: TinCan\RemoteLRS->TinCan\{closure}()
#1 /var/www/html/oyunlagelecek/mod/tincanlaunch/TinCanPHP/src/RemoteLRS.php(150): fopen()
#2 /var/www/html/oyunlagelecek/mod/tincanlaunch/TinCanPHP/src/RemoteLRS.php(669): TinCan\RemoteLRS->sendRequest()
#3 /var/www/html/oyunlagelecek/mod/tincanlaunch/locallib.php(379): TinCan\RemoteLRS->retrieveState()
#4 /var/www/html/oyunlagelecek/mod/tincanlaunch/view.php(106): tincanlaunch_get_global_parameters_and_get_state()
#5 {main}"
  ["httpResponse"]=>
  NULL
}