Error: FPDF error: Some data has already been output, can't send PDF file (output started at /home/nerej/public_html/vendor/cakephp/cakephp/src/Error/Debugger.php:754)

Some of the Table objects in your application were created by instantiating "Cake\ORM\Table" instead of any other specific subclass.

This could be the cause for this exception. Auto-Tables are created for you under the following circumstances:

The class for the specified table does not exist.
The Table was created with a typo: TableRegistry::get('Atricles');
The class file has a typo in the name or incorrect namespace: class Atricles extends Table
The file containing the class has a typo or incorrect casing: Atricles.php
The Table was used using associations but the association has a typo: $this->belongsTo('Atricles')
The table class resides in a Plugin but no plugin notation was used in the association definition.

Please try correcting the issue for the following table aliases:

If you want to customize this error message, create src/Template/Error/error500.ctp

	`{`
	`if(PHP_SAPI!='cli')`
	`{`
	`if(headers_sent($file,$line))`
	`$this->Error("Some data has already been output, can't send PDF file (output started at $file:$line)");`
	`}`
	`if(ob_get_length())`
	`{`
	`// The output buffer is not empty`

	`switch(strtoupper($dest))`
	`{`
	`case 'I':`
	`// Send to standard output`
	`$this->_checkoutput();`
	`if(PHP_SAPI!='cli')`
	`{`
	`// We send to a browser`
	`header('Content-Type: application/pdf');`

	`$pdf->MultiCell(0,6,$this->pdf_encode(strip_tags($story->body)));`
	`$pdf->SetFont('Arial','', 10);`
	`$pdf->MultiCell(0,7,SITE_NAME_LONG.' - 17 Accord Park Drive #207, Norwell MA 02061 - (781) 878-4540',0,'C');`
	`$pdf->SetTitle($this->pdf_encode($story->title));`
	`$pdf->Output();`
	`}`

	`public function pdf_encode($str) {`
	`$str = iconv('UTF-8', 'windows-1252', html_entity_decode(strip_tags($str)));`

	`]);`
	`}`
	`$callable = [$this, $request->params['action']];`

	`return call_user_func_array($callable, $request->params['pass']);`
	`}`

	`/**`
	`* Merge components, helpers vars from`

	`if ($result instanceof Response) {`
	`return $result;`
	`}`

	`$response = $controller->invokeAction();`
	`if ($response !== null && !($response instanceof Response)) {`
	`throw new LogicException('Controller actions can only return Cake\Network\Response or null.');`
	`}`

	`} else {`
	`$controller = $this->factory->create($request, $response);`
	`}`

	`$response = $this->_invoke($controller);`
	`if (isset($request->params['return'])) {`
	`return $response;`
	`}`

	`$cakeRequest = RequestTransformer::toCake($request);`
	`$cakeResponse = ResponseTransformer::toCake($response);`

	`// Dispatch the request/response to CakePHP`
	`$cakeResponse = $this->getDispatcher()->dispatch($cakeRequest, $cakeResponse);`

	`// Convert the response back into a PSR7 object.`
	`return ResponseTransformer::toPsr($cakeResponse);`
	`}`

	`$next = $this->middleware->get($this->index);`
	`if ($next) {`
	`$this->index++;`

	`return $next($request, $response, $this);`
	`}`

	`// End of the queue`
	`return $response;`

	`$response->getHeaders()`
	`);`
	`}`

	`return $next($request, $response);`
	`}`
	`}`

	`public function __invoke($request, $response, $next)`
	`{`
	`$url = $request->getUri()->getPath();`
	`if (strpos($url, '..') !== false \|\| strpos($url, '.') === false) {`
	`return $next($request, $response);`
	`}`

	`$assetFile = $this->_getAssetFile($url);`
	`if ($assetFile === null \|\| !file_exists($assetFile)) {`

	`*/`
	`public function __invoke($request, $response, $next)`
	`{`
	`try {`
	`return $next($request, $response);`
	`} catch (\Exception $e) {`
	`return $this->handleException($e, $request, $response);`
	`}`
	`}`

	`{`
	`$this->middleware = $middleware;`
	`$this->index = 0;`

	`return $this->__invoke($request, $response);`
	`}`

	`/**`
	`* @param \Psr\Http\Message\ServerRequestInterface $request The server request`

	throw new RuntimeException('The application `middleware` method did not return a middleware queue.');
	`}`
	`$this->dispatchEvent('Server.buildMiddleware', ['middleware' => $middleware]);`
	`$middleware->add($this->app);`
	`$response = $this->runner->run($middleware, $request, $response);`

	`if (!($response instanceof ResponseInterface)) {`
	`throw new RuntimeException(sprintf(`
	`'Application did not create a response. Got "%s" instead.',`

	`$server = new Server(new Application(dirname(__DIR__) . '/config'));`

	`// Run the request/response through the application`
	`// and emit the response.`
	`$server->emit($server->run());`