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Error 404 – Can’t Find Ajax Request URL
If the WP Staging cloning process interrupts while it copies files from one location to another or if it stops with the error “Error 404 Can’t find Ajax…
Founder
Building WordPress infrastructure tools since 2015
About René Hermenau
I'm René Hermenau, founder of WP STAGING. I've been developing WordPress infrastructure software since 2013, building WP STAGING since 2015, and publishing code on GitHub since 2011.
WP STAGING started as a developer project to solve a problem I kept running into during client work: cloning and migrating WordPress sites safely without breaking serialized data, file paths, media references, or database relationships.
Today, WP STAGING is built and maintained by a team of more than 10 people. The free plugin is used on 100,000+ active WordPress installations, and WP STAGING Pro powers backup, migration, staging, and deployment workflows for agencies, hosting providers, ecommerce stores, and professional WordPress teams.
I'm still hands-on with the codebase, architecture, and technical direction of the product. Much of my work focuses on reliable database exports, memory-efficient processing on large WordPress sites, safe restore workflows, staging-to-production deployments, and reducing the risk of partially written files or database tables during migrations.
On this author page, you'll find technical articles, documentation, and product guides I have written, reviewed, or helped shape with the WP STAGING team.
When you touch code, leave it 10% better than before and write a test.
If you're stuck on a WP STAGING question, start with the documentation. If you hit a bug, file it on GitHub. Our team reads everything that lands there.
Areas of expertise
WordPress backups and restore workflows
WordPress staging sites and cloning
WordPress migrations and site transfers
WordPress database structure and serialized data
Remote Sync and server-to-server WordPress transfers
WP STAGING CLI and local Docker-based WordPress development
Plugin architecture, large-site performance, and safe deployment workflows
At a glance
Role: Founder of WP STAGING
Focus: WordPress backups, staging, migrations, database handling, plugin architecture, and deployment safety
Experience: Developing WordPress infrastructure software since 2013 and building WP STAGING since 2015
Code: github.com/rene-hermenau
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If the WP Staging cloning process interrupts while it copies files from one location to another or if it stops with the error “Error 404 Can’t find Ajax…
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Sometimes you need to know the version number of your WordPress installation. For instance, before you migrate from a staging website to the production site using WP Staging…
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TL;DR: WP STAGING’s Push Wizard copies your staged changes — files, database tables, or both — to the live site. Back up the live site first (Step 1),…
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As the default option, WP STAGING tries to create a copy in the root folder of your WordPress website. If it cannot write into this folder, you’ll get…
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The 504 Gateway Timeout Error can affect your website’s performance and user experience and even lead to a loss of potential visitors. However, the good news is that…
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WordPress is a widely used and renowned platform for managing content management systems (CMS) that millions of website owners worldwide use. It’s essential to have a backup of your WordPress database…
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The 503 Service Unavailable Error can be frustrating for both website owners and visitors alike, as it prevents access to your valuable content. However, the good news is…
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We invest countless hours into creating, customizing, and optimizing our online presence, so it’s crucial to have a reliable backup plan in place. In the event of unforeseen…
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As a WordPress user or developer, you may have encountered your fair share of frustrating errors while working on your website. One of the most common and perplexing…
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WP-CLI is a command-line interface for WordPress. It lets you install plugins, manage users, run database operations, and more — all from a terminal, without touching the WordPress…
Clone, stage, and back up WordPress sites in seconds. Built and maintained by Rene Hermenau and team.