I will fix wordpress fatal error, critical errors and woocommerce bugs

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mattcowebdev
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mattcowebdev
Mathias James

About this gig

Is your WordPress website showing a fatal error, critical error, white screen, or broken WooCommerce checkout?

I can help you identify and fix WordPress errors, PHP issues, plugin conflicts, and WooCommerce bugs so your website works properly again.

What I can help you fix:

  • WordPress fatal error and critical errors
  • PHP errors and plugin conflicts
  • 404, 403, and 500 website errors
  • White screen of death
  • WooCommerce checkout and cart issues
  • Broken WordPress plugin functionality
  • Payment gateway and API integration issues
  • Errors following plugin or website updates

Why choose me?

I'm a Full Stack Software Engineer with 4+ years of experience in web development, backend APIs, and e-commerce integrations.

I've worked on WooCommerce plugin development, PHP checkout hooks, custom payment flows, and complex frontend/backend applications.

I focus on finding the cause of the problem, implementing a suitable fix, and testing the affected functionality.

Please contact me before ordering with your error details so I can recommend the right package.

Respect third-party rights

Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.

Get to know Mathias James

Mathias James

Full Stack Developer, Payment API and Ecommerce Expert

  • FromUnited States
  • Member sinceOct 2026
  • Avg. response time1 day
  • Languages

    English
Full Stack Software Engineer with 4+ years of experience building scalable web applications, payment integrations, and backend APIs. I specialize in React, Next.js, Node.js, NestJS, TypeScript, Shopify, and WooCommerce.My expertise includes Paypal, Stripe and Flutterwave payments, custom checkout solutions, API integrations, and payment verification. I've built production systems serving thousands of users.I help businesses develop secure, high-performing websites and seamless payment experiences with clean code, reliable delivery,and clear communication and thorough testing for every project.

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