In addition, please replace 0 with 1 and 2 (if applicable) with 3 in your application's 5 file.Furthermore, the following first-party packages have received new major releases to support Laravel 9.x. If applicable, you should read their individual upgrade guides before upgrading: Finally, examine any other third-party packages consumed by your application and verify you are using the proper version for Laravel 9 support. PHP Return TypesPHP is beginning to transition to requiring return type definitions on PHP methods such as 5, 6, etc. In light of this, Laravel 9 has implemented these return types in its code base. Typically, this should not affect user written code; however, if you are overriding one of these methods by extending Laravel's core classes, you will need to add these return types to your own application or package code:
In addition, return types were added to methods implementing PHP's 5. Again, it is unlikely that this change affects your own application or package code:
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