In this post, I’ll walk through the problem and show you how I resolved it with a simple change in how headers are read from the webhook request.

The Issue: Signature and Timestamp Mismatch

Initially, my custom plugin fetched webhook headers like this:

$received_signature = $request->get_header('x-cf-signature');
$received_timestamp = $request->get_header('x-cf-timestamp');
  

However, when Cashfree sent live webhook requests, the values did not match the expected ones used for signature validation.

After debugging, I found that the webhook requests were not using lowercase headers, but instead used capitalized header names:

$received_signature = $request->get_header('X-Webhook-Signature');
$received_timestamp = $request->get_header('X-Webhook-Timestamp');
  

The Solution: Use Correct Header Names

To resolve the mismatch issues, update your code like this:

$raw_post_data = $request->get_body();
$received_signature = $request->get_header('X-Webhook-Signature');
$received_timestamp = $request->get_header('X-Webhook-Timestamp');
  

This change ensures your webhook validation works as expected.

Why This Matters

Cashfree (like many other gateways) signs their webhook requests to verify authenticity. If the signature doesn’t match, it’s likely because:

• Headers were not read with the correct case
• The raw body was altered or not captured properly
• Timestamp wasn’t passed accurately

By ensuring header names match exactly as sent by Cashfree, you avoid validation failures.

Debugging Tip

If you’re unsure about the actual headers received, log them using:

error_log(print_r($request->get_headers(), true));
  

This will output all headers to your PHP error log, helping you confirm header formats.

Final Notes

• Always use exact casing for headers when validating webhooks.
• Log headers during debugging for clarity.
• Keep your plugin code updated in case Cashfree changes their header structure.

Have you faced similar issues? Feel free to share in the comments and let’s help each other out!

Error: Node Sass does not yet support your current environment: OS X 64-bit with Unsupported runtime

Reason for Issue: Node version was changed after re-install. To fix this issue we just need to build node-sass using npm command.

npm rebuild node-sass

After completion, Issue ionic serve command and error should be gone away.

mysqld: Can’t open file: ‘mysql.ibd’ (errno: 0 – )
[ERROR] [MY-012574] [InnoDB] Unable to lock ./ibdata1 error: 35
Failed to initialize DD Storage Engine

In my case New MySQL version was MySQL 8.0.17_1 while old version was MySQL 5.7.

1. Backup MySQL data folder. This is most important. In case something goes wrong you will have data backup folder to recover some other way. If you have installed mysql via homebrew then data folder will be /usr/??local?/?var/mysql

2. Open Terminal and Uninstall existing version by running following command.

brew uninstall mysql

3. Install MySQL 5.7

brew uninstall mysql@5.7

4. Link MySql Version

brew link --force mysql@5.7

5. Start MySQL service

brew services start mysql@5.7

All done. All my databases and tables come back mysql started successfully after reverting from MySQL 8 to MySQL 5.7. Hope this help others too.

Getting sum of a column in database is fairly simple. See below use case with and without where clause.

$amount = DB::table('invoice_details')
          ->sum('billing_amount');

which gets the sum of the entire column. I tried writing:

$amount = DB::table('invoice_details')
            ->where('invoice_id' '=' $id)
            ->sum('billing_amount');

Make sure SUM method is placed at the end otherwise Laravel may thrown an error.

You may end on above issue while trying to install python django module using pip command. Solution is very simple. Simply run following command in terminal. Change version number depending on your python version.

For Default Python Installation

sudo easy_install pip

For Default Python 2.7 Installation

sudo easy_install-2.7 pip 

For Default Python 3.7 Installation

sudo easy_install-3.7 pip 

OR

sudo easy_install-3.7 pip3 

django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module. Did you install mysqlclient?

ModuleNotFoundError: No module named ‘ConfigParser’

Resolution:

I tried to install mysql module using pip command but it failed several times. pip install mysqlclient

Here are the steps worked for me. Run each command one by one in terminal. Note I used pip3 instead on pip because of I have python2 and python3 both installed on my MacBook. If you have only installed python3 on your pc then run only pip command. Python 2 is by default installed on MacBooks.

1. pip3 install mysql-connector
2. pip3 install PyMySQL
3. pip3 install mysql-client
4. export PATH=”/usr/local/opt/openssl/bin:$PATH”
   export LDFLAGS=”-L/usr/local/opt/openssl/lib”
   export CPPFLAGS=”-I/usr/local/opt/openssl/include”
5. pip3 install mysqlclient

The possible reason was due to hidden iframe injection by browser add-ons. However I could not find it my web page. To resolve issue all you need to add P3P header in VerifyCsrfToken.php middleware file. Your issue should be gone once you add P3P header. Check below VerifyCsrfToken.php code that resolve my issue.

namespace App\Http\Middleware;

use Illuminate\Foundation\Http\Middleware\VerifyCsrfToken as BaseVerifier;
use Closure;

class VerifyCsrfToken extends BaseVerifier
{
    /**
     * The URIs that should be excluded from CSRF verification.
     *
     * @var array
     */
    protected $except = [
        //
    ];
    
    public function handle($request, Closure $next)
    {
        $response = $next($request);

        if (last(explode('\\',get_class($response))) != 'RedirectResponse') {
            $response->header('P3P', 'CP="IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT"');
        }

        return $response;
    }    
    
}

I added following two section.

use Closure;

handle function to add header

public function handle($request, Closure $next)
{
    $response = $next($request);

    if (last(explode('\\',get_class($response))) != 'RedirectResponse') {
            $response->header('P3P', 'CP="IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT"');
    }

    return $response;
}

1. Tap on the blank space on Home Screen. Notice three dots arrow on above Wallpapers, Widgets, Settings icons.

2. Tap on Icon Labels and change it from Hide to Show. This screen have several other options to customize home screen. You may configure based on your preference.

• Copy all root folders files.
• Backup/Restore database.
• Updated database credentials in local.xml file.
• Updated new domain base urls in core_config_data table.

If website show above error or redirect to old domain run the following query in phpmyadmin. Be careful. Make sure you are running query in correct database.

TRUNCATE dataflow_batch_export;
TRUNCATE dataflow_batch_import;
TRUNCATE log_customer;
TRUNCATE log_quote;
TRUNCATE log_summary;
TRUNCATE log_summary_type;
TRUNCATE log_url;
TRUNCATE log_url_info;
TRUNCATE log_visitor;
TRUNCATE log_visitor_info;
TRUNCATE log_visitor_online;
TRUNCATE report_event;