Minified React error #130

Replies: 0

This is a wp multisite install with only 2 subsites, /es and /en. All plugins updated.
Hosting with apache+nginx, Varnish+W3TC and Cloudflare.
The issue is in the subsite /es/

Error message since 5.3 update: When I try to edit a post I receive the following message:

Error: Minified React error #130; visit https://reactjs.org/docs/error-decoder.html?invariant=130&args[]=undefined&args[]= for the full message or use the non-minified dev environment for full errors and additional helpful warnings. 
    at Rc (https://surdelsur.com/es/wp-includes/js/dist/vendor/react-dom.min.js:157:299)
    at q (https://surdelsur.com/es/wp-includes/js/dist/vendor/react-dom.min.js:69:432)
    at v (https://surdelsur.com/es/wp-includes/js/dist/vendor/react-dom.min.js:72:200)
    at https://surdelsur.com/es/wp-includes/js/dist/vendor/react-dom.min.js:76:214
    at T (https://surdelsur.com/es/wp-includes/js/dist/vendor/react-dom.min.js:87:146)
    at ph (https://surdelsur.com/es/wp-includes/js/dist/vendor/react-dom.min.js:218:209)
    at lh (https://surdelsur.com/es/wp-includes/js/dist/vendor/react-dom.min.js:126:409)
    at O (https://surdelsur.com/es/wp-includes/js/dist/vendor/react-dom.min.js:121:71)
    at ze (https://surdelsur.com/es/wp-includes/js/dist/vendor/react-dom.min.js:118:14)
    at https://surdelsur.com/es/wp-includes/js/dist/vendor/react-dom.min.js:53:49

In the link:
https://reactjs.org/docs/error-decoder.html/?invariant=130&args%5B%5D=undefined&args%5B%5D=
Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined.

I followed all the instructions including Health Check & Troubleshooting testing, changing browser. Resaving permalinks. Clearing all caches except cloudflare cache, because this is a problem in the backend.

I did not change the wp-include folder because /en/ is using it without problem.

Any idea? Thanks in advance for your help