title: PayPal credentials not working on Laravel
body: <p>I am trying to use <a href="https://github.com/srmklive/laravel-paypal" rel="nofollow noreferrer">this library to include Paypal in my Laravel</a> application.</p>
  
  <p>After installing it and giving the credentials, I get this error:</p>
  
  <pre><code>  "L_ERRORCODE0" =&gt; "10002"
    "L_SHORTMESSAGE0" =&gt; "Security error"
    "L_LONGMESSAGE0" =&gt; "Security header is not valid"
    "L_SEVERITYCODE0" =&gt; "Error"
  </code></pre>
  
  <p>So it seems that my credentials are not correct.</p>
  
  <p>Here is the credentials for the sandbox:</p>
  
  <pre><code>    'username'    =&gt; env('PAYPAL_SANDBOX_API_USERNAME', ''),
      'password'    =&gt; env('PAYPAL_SANDBOX_API_PASSWORD', ''),
      'secret'      =&gt; env('PAYPAL_SANDBOX_API_SECRET', ''),
      'certificate' =&gt; env('PAYPAL_SANDBOX_API_CERTIFICATE', ''),
      'app_id'      =&gt; '*****', 
  </code></pre>
  
  <p>I have been looking for the credentials for hours now. Anyone knows exactly where each are?</p>
  
  <p>I found "username" and "password" for sandbox somewhere, but there are no secrets or certificates, and I have found "username" ,"Client ID" and "Secret" but the aforementioned "username" does not even match the previous "username".</p>
  
  <p>I am completely lost. Help would be appreciated.</p>