Important: #83724 - API and behavior change in request handler classes¶
In preparation for a better PSR-7 and a new PSR-15 integration the internal request handler classes have been changed:
All methods gained strict argument type and return type declarations.
Instead of calling
Instead of returning
Extending one of the core request handlers without adding type declarations (to overloaded methods), will trigger a PHP fatal error.
All 3rd party extensions extending one of the core request handlers.