PayPal response code 400 - php

Question

I'm workin on PayPal Payments in PHP. Now i am using paypal recurring payment option all proccess don but last operation not done propery and payment not received.
Everything was fine until i got this error: http://prntscr.com/gtz4xx
Here is code
public function create_plan(){
// Create a new billing plan
$plan = new Plan();
$plan->setName('App Name Monthly Billing')
->setDescription('Monthly Subscription to the App Name')
->setType('fixed');
// Set billing plan definitions
$paymentDefinition = new PaymentDefinition();
$paymentDefinition->setName('Regular Payments')
->setType('REGULAR')
->setFrequency('Month')
->setFrequencyInterval('1')
->setCycles('12')
->setAmount(new Currency(array('value' => 100, 'currency' => 'USD')));
// Set merchant preferences
$merchantPreferences = new MerchantPreferences();
$merchantPreferences->setReturnUrl(URL::route('paypal.return'))
->setCancelUrl(URL::route('paypal.return'))
->setAutoBillAmount('yes')
->setInitialFailAmountAction('CONTINUE')
->setMaxFailAttempts('0')
->setSetupFee(new Currency(array('value' => 1, 'currency' => 'USD')));
$plan->setPaymentDefinitions(array($paymentDefinition));
$plan->setMerchantPreferences($merchantPreferences);
//create the plan
try {
$createdPlan = $plan->create($this->apiContext);
try {
$patch = new Patch();
$value = new PayPalModel('{"state":"ACTIVE"}');
$patch->setOp('replace')
->setPath('/')
->setValue($value);
$patchRequest = new PatchRequest();
$patchRequest->addPatch($patch);
$createdPlan->update($patchRequest, $this->apiContext);
$plan = Plan::get($createdPlan->getId(), $this->apiContext);
// Output plan id
//echo 'Plan ID:' . $plan->getId();
return redirect('subscribe/paypal/'.$plan->getId());
} catch (PayPal\Exception\PayPalConnectionException $ex) {
echo $ex->getCode();
echo $ex->getData();
die($ex);
} catch (Exception $ex) {
die($ex);
}
} catch (PayPal\Exception\PayPalConnectionException $ex) {
echo $ex->getCode();
echo $ex->getData();
die($ex);
} catch (Exception $ex) {
die($ex);
}
}
public function paypalRedirect($plan_id){
// Create new agreement
$agreement = new Agreement();
$agreement->setName('App Name Monthly Subscription Agreement')
->setDescription('Basic Subscription')
->setStartDate(\Carbon\Carbon::now()->addMinutes(5)->toIso8601String());
// Set plan id
$plan = new Plan();
$plan->setId($plan_id);
$agreement->setPlan($plan);
// Add payer type
$payer = new Payer();
$payer->setPaymentMethod('paypal');
$agreement->setPayer($payer);
try {
// Create agreement
$agreement = $agreement->create($this->apiContext);
// Extract approval URL to redirect user
$approvalUrl = $agreement->getApprovalLink();
return redirect($approvalUrl);
} catch (PayPal\Exception\PayPalConnectionException $ex) {
echo $ex->getCode();
echo $ex->getData();
die($ex);
} catch (Exception $ex) {
die($ex);
}
}
public function paypalReturn(Request $request){
$token = $request->token;
$agreement = new \PayPal\Api\Agreement();
try {
// Execute agreement
$result = $agreement->execute($token, $this->apiContext);
/* $user = Auth::user();
$user->role = 'subscriber';
$user->paypal = 1;
if(isset($result->id)){
$user->paypal_agreement_id = $result->id;
}
$user->save();*/
echo 'New Subscriber Created and Billed';
} catch (\PayPal\Exception\PayPalConnectionException $ex) {
echo 'You have either cancelled the request or your session has expired';
}
}
Why this is happening? How can I fix that?
Please help me.
Thanks