Magento Credit Card error - Invalid header line detected

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

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 installation, integration, migration... After reading your project description carefully, I am confident that with my experience, I can have this job well done in the shortest time. However, there are still some questions I wanna ask you first, just to make sure about the solution. So, if you are interested, feel free to send me a message via private chat. I am very glad to have a chance to discuss with you, hope to hear back from you soon! Sincerely, Doanh Pham

Hello, I have read your job details carefully and I can do your work if you will provide me more details of the project. I will definitely give you a better solution to your problem. Thanks Ambient Infotech

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.

Dear Client, Greetings of the day!! I am an expert level, self motivated, Full Time Professional Freelancer Magento 1&2 Developer, having 8+ years of experience in website optimisation & custom theme & custom module development, working on both version 1. x to 2. x. All types of WEB solutions can provide and I have read your job requirement carefully and I am ready to start this job immediately, kindly initiate the chat and share project more detail, I'll do this job on time with 100% of quality work. Skills: Magento/WordPress/JavaScript/E-commerce/Graphic Design/ HTML5/ PHP5&7/ CSS3/Website Design/MySQL/Linux and etc. My Skills in Magento : > Magento: 1.9 to 2.0/2.2.0/2.2.6 X > Magento 2 edit and fix > Customization, template, API, Plugin > Multiple payment gateway > API & Plugin > Marketplace store > Custom module > Theme modification > Speed optimization and etc. I look forward to hearing from you soon! More discussion over chat Thank you :)

Hi, I am Magento1 certified developer with "Developer Plus" certification having 8years of working experience in web development, along with almost 2+year of working experience in Magento2 web development, majorly in custom development, theme implementation and migration and site from scratch. Just wondering which payment method you are using? is it any third party module that you have purchased? Also which magento version you are using? Lets discuss further at your convenience. Thanks