Parameter #1 $timezone of class DateTimeZone constructor expects string, string|null given.

Ignored error pattern #^Parameter \#1 \$timezone of class DateTimeZone constructor expects string, string\|null given\.$# in path /home/runner/work/ipl-scheduler/ipl-scheduler/src/RRule.php is expected to occur 1 time, but occurred 2 times.

Using nullsafe method call on non-nullable type DateTimeInterface. Use -> instead.

Parameter #2 ...$values of function sprintf expects bool|float|int|string|null, mixed given.

Parameter #2 $datetime of static method DateTime::createFromFormat() expects string, mixed given.

Property ipl\Scheduler\RRule::$frequency (string) does not accept mixed.

Parameter #1 $datetime of class DateTime constructor expects string, mixed given.

Parameter #1 $datetime of class DateTime constructor expects string, mixed given.

Ignored error pattern #^Method ipl\\Scheduler\\Cron\:\:getNextDue\(\) should return DateTimeInterface but returns DateTimeInterface\|null\.$# in path /home/runner/work/ipl-scheduler/ipl-scheduler/src/Cron.php is expected to occur 2 times, but occurred only 1 time.