Google Calendar public ICS calendars have an empty line at the end of the file and ics-parser tries to parse it into an key:value array.
1 Illuminate\Foundation\Bootstrap\HandleExceptions::handleError("Trying to access array offset on value of type bool", "/vendor/johngrogg/ics-parser/src/ICal/ICal.php")
/vendor/johngrogg/ics-parser/src/ICal/ICal.php:627
Google Calendar public ICS calendars have an empty line at the end of the file and
ics-parser
tries to parse it into an key:value array.