Cannot Server Push (header size over 3072 Bytes) with Wordpress

I use Wordpress Multisite and Cloudflare plugin.

My script_errors.log have this error: Cannot Server Push (header size over 3072 Bytes)

How can I fix this issue?

This issue is not related to CloudFlare, so this is the wrong place to ask I guess

I found the relevance between this error and CloudFlare here: https://github.com/cloudflare/Cloudflare-WordPress/issues/204

Search for string: Cannot Server Push (header size over 3072 Bytes)
you will see issue

And there is an option in wp-config.php:
define(‘CLOUDFLARE_HTTP2_SERVER_PUSH_ACTIVE’, true);

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