EspoCRM Lead capture and Preflight Checks.

Short summary

A developer shares their debugging journey solving a CORS error blocking EspoCRM lead capture form submissions on their website. The post explains the fundamental CORS concept: required headers must originate from the server response, not the client request. Solutions include EspoCRM's leadCaptureAllowOrigin configuration and .htaccess adjustments, with practical code examples and clear explanation for developers facing similar integration challenges.

• •CORS errors occur when server response lacks Access-Control-Allow-Origin header—not a client-side header problem
• •EspoCRM solution: add 'leadCaptureAllowOrigin' => '*' to config.php or reconfigure .htaccess for proper origin handling
• •Real debugging journey demonstrates CORS fundamentals with Claude AI assistance playing a key troubleshooting role

Generated with AI, which can make mistakes.