Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community!
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial
Setiawan Angga
450 Pointserror during install laravel with composer
i got the error like this one:
In Collection.php
line 11:
During inheritance of ArrayAccess: Uncaught ErrorException: Return type of
Illuminate\Support\Collection::offsetExists($key) should either be compatib
le with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTyp
eWillChange] attribute should be used to temporarily suppress the notice in
/Users/buildwithangga/Desktop/treehouse/vendor/laravel/framework/src/Illum
inate/Support/Collection.php:1277
1 Answer

Rich Donnellan
Treehouse Moderator 25,868 PointsHard to say, but check out this thread on the Laracasts site. Your PHP version may be the issue.