PHP error report

An error occured while running this PHP script.

Please notify the developers of this error and, if possible, include the steps to be taken to replicate it.

Error message

• Notice: Undefined offset: 1 in /home/wolfstijd/domains/wolfstijd.nl/public_html/src/controllers/index.php on line 80.

Backtrace

• /home/wolfstijd/domains/wolfstijd.nl/public_html/index.php:include() (line 31)

Request (GET)

array(2) {
  ["lid"] => string(1) "2"
  ["mid"] => string(1) "1"
}