CakePHP: the rapid development PHP framework

Warning (2): compact(): Undefined variable $etagMatches [CORE/src/Http/Response.php, line 1864]

            $timeMatches = strtotime($this->modified()) === strtotime($modifiedSince);
        }
        $checks = compact('etagMatches', 'timeMatches');

compact - [internal], line ??
Cake\Http\Response::checkNotModified() - CORE/src/Http/Response.php, line 1864
Cake\Controller\Component\RequestHandlerComponent::beforeRender() - CORE/src/Controller/Component/RequestHandlerComponent.php, line 332
Cake\Event\EventManager::_callListener() - CORE/src/Event/EventManager.php, line 414
Cake\Event\EventManager::dispatch() - CORE/src/Event/EventManager.php, line 391
Cake\Controller\Controller::dispatchEvent() - CORE/src/Event/EventDispatcherTrait.php, line 78
Cake\Controller\Controller::render() - CORE/src/Controller/Controller.php, line 610
App\Controller\PagesController::display() - APP/Controller/PagesController.php, line 61
Cake\Controller\Controller::invokeAction() - CORE/src/Controller/Controller.php, line 440
Cake\Http\ActionDispatcher::_invoke() - CORE/src/Http/ActionDispatcher.php, line 119
Cake\Http\ActionDispatcher::dispatch() - CORE/src/Http/ActionDispatcher.php, line 93
Cake\Http\BaseApplication::__invoke() - CORE/src/Http/BaseApplication.php, line 78
Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65
Cake\Routing\Middleware\RoutingMiddleware::__invoke() - CORE/src/Routing/Middleware/RoutingMiddleware.php, line 59
Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65
Cake\Routing\Middleware\AssetMiddleware::__invoke() - CORE/src/Routing/Middleware/AssetMiddleware.php, line 88
Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65

Warning (512): Unable to emit headers. Headers sent in file=/homepages/41/d369770473/htdocs/dukel/cakephp/vendor/cakephp/cakephp/src/Error/Debugger.php line=822 [CORE/src/Http/ResponseEmitter.php, line 48]

Code Context

            $message = "Unable to emit headers. Headers sent in file=$file line=$line";
            if (Configure::read('debug')) {
                trigger_error($message, E_USER_WARNING);

Cake\Http\ResponseEmitter::emit() - CORE/src/Http/ResponseEmitter.php, line 48
Cake\Http\Server::emit() - CORE/src/Http/Server.php, line 105
[main] - ROOT/webroot/index.php, line 37

Warning (2): Cannot modify header information - headers already sent by (output started at /homepages/41/d369770473/htdocs/dukel/cakephp/vendor/cakephp/cakephp/src/Error/Debugger.php:822) [CORE/src/Http/ResponseEmitter.php, line 148]

Code Context

            $response->getProtocolVersion(),
            $response->getStatusCode(),
            ($reasonPhrase ? ' ' . $reasonPhrase : '')

header - [internal], line ??
Cake\Http\ResponseEmitter::emitStatusLine() - CORE/src/Http/ResponseEmitter.php, line 148
Cake\Http\ResponseEmitter::emit() - CORE/src/Http/ResponseEmitter.php, line 54
Cake\Http\Server::emit() - CORE/src/Http/Server.php, line 105
[main] - ROOT/webroot/index.php, line 37

Code Context

            $first = true;
            foreach ($values as $value) {
                header(sprintf(

header - [internal], line ??
Cake\Http\ResponseEmitter::emitHeaders() - CORE/src/Http/ResponseEmitter.php, line 177
Cake\Http\ResponseEmitter::emit() - CORE/src/Http/ResponseEmitter.php, line 55
Cake\Http\Server::emit() - CORE/src/Http/Server.php, line 105
[main] - ROOT/webroot/index.php, line 37

Code Context

            $first = true;
            foreach ($values as $value) {
                header(sprintf(

header - [internal], line ??
Cake\Http\ResponseEmitter::emitHeaders() - CORE/src/Http/ResponseEmitter.php, line 177
Cake\Http\ResponseEmitter::emit() - CORE/src/Http/ResponseEmitter.php, line 55
Cake\Http\Server::emit() - CORE/src/Http/Server.php, line 105
[main] - ROOT/webroot/index.php, line 37

Please be aware that this page will not be shown if you turn off debug mode unless you replace src/Template/Pages/home.ctp with your own version.

URL rewriting is not properly configured on your server.
1) Help me configure it
2) I don't / can't use URL rewriting

Environment

Your version of PHP is 5.6.0 or higher (detected 8.0.20).
Your version of PHP has the mbstring extension loaded.
Your version of PHP has the openssl extension loaded.
Your version of PHP has the intl extension loaded.

Filesystem

Your tmp directory is writable.
Your logs directory is writable.
The FileEngine is being used for core caching. To change the config edit config/app.php

Database

CakePHP is able to connect to the database.

DebugKit

DebugKit is loaded.

Editing this Page

To change the content of this page, edit: src/Template/Pages/home.ctp.
You can also add some CSS styles for your pages at: webroot/css/.

Getting Started

More about Cake

CakePHP is a rapid development framework for PHP which uses commonly known design patterns like Front Controller and MVC.
Our primary goal is to provide a structured framework that enables PHP users at all levels to rapidly develop robust web applications, without any loss to flexibility.

Help and Bug Reports

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Docs and Downloads

CakePHP API
- Quick Reference
CakePHP Documentation
- Your Rapid Development Cookbook
The Bakery
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CakePHP plugins repo
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CakePHP Code
- For the Development of CakePHP Git repository, Downloads
CakePHP Awesome List
- A curated list of amazingly awesome CakePHP plugins, resources and shiny things.
CakePHP
- The Rapid Development Framework

Training and Certification

Cake Software Foundation
- Promoting development related to CakePHP
CakePHP Training
- Learn to use the CakePHP framework
CakePHP Certification
- Become a certified CakePHP developer