Project Description: I need an Odoo specialist (Community/Enterprise version) to fix an error that prevents the web editor from working properly. The Problem: When trying to edit any website page in Odoo, the following error appears on screen: text Odoo Client Error UncaughtPromiseError > OwlError Caused by: Error: Syntax error, unrecognized expression: , .o_newsletter_popup The error occurs specifically in the Owl lifecycle (onWillStart) of the WYSIWYG editor and is related to a malformed jQuery selector that starts with a comma (", .o_newsletter_popup"). What I've already tried: Cleared browser cache Updated modules (web, website, web_editor) with -u Verified it's not a version issue (I do NOT want an upgrade to a major version, just maintain my current version) Technical Environment: Server: Linux (probably Ubuntu/Debian) Access: Via AnyDesk to my local PC, then SSH to the server from there Odoo installation method: [INDICATE HERE IF .deb, GIT, DOCKER, etc.] Important - Security: I will NOT share passwords through the platform Credentials will be provided via private chat ONCE the project is accepted The connection will be monitored throughout the entire process Requirements: Connect via AnyDesk to my PC (I'll provide ID and temporary password) From there, access the server via SSH Diagnose the root cause of the error (likely a custom module or DOM conflict) Implement a permanent fix Verify that the web editor works correctly Required Skills: Odoo expert (specifically in web_editor and Owl framework) Advanced JavaScript/jQuery knowledge Linux server and SSH experience Experience debugging Odoo