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Magento Credit Card error - Invalid header line detected

Recently started getting an error when customers place an order. My processor marks the transaction as complete and authorizes the card. Magento fails the transaction with the following error:

Gateway error: Invalid header line detected."

Debugging shows the result array as:

[response_code] => -1

[response_reason_code] => 0

[response_reason_text] => Invalid header line detected

the normal response codes for an authorization are 1,2,3 or 4

I need someone who is very familiar with magento and who can fix this

Updated Requirement: We require you to recreate the issue on your own instance of Magento 1.x and provide instructions on how to fix.

Skills: Magento, PHP

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About the Employer:
( 0 reviews ) Secaucus, United States

Project ID: #19250648

12 freelancers are bidding on average $85 for this job

TakeReal

Hello, My name is Sergey. I am Freelancer from Saint Petersburg, Russia. I can help you as Magento expert to fix 'Invalid header line detected' issue. So, credit card payments will be completed properly. This i More

$90 USD in 1 day
(1776 Reviews)
8.1
GetReal

Hi, Let me fix this issue for you, I have vast experience, look forward to hear from you and work with you..thanks!

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(703 Reviews)
7.9
vniteam

Hi, Seems like you are seeking a developer to help you to fix credit card error and I would like to apply for this job. I have worked on Magento platform for 7 years and done many types of tasks such as installatio More

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(283 Reviews)
7.4
tlchung

I can fix the magento issue for you. I am a skilled magento developer with over 10 years experience. let discuss more via private message.

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(425 Reviews)
7.3
sankhalainfosol

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7.2
ambientinfotech

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6.9
ykarora26

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6.8
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crystalhitesh

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6.1
manpreetkaur991

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(11 Reviews)
4.7
birjushah2704

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azabludny

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(0 Reviews)
0.0