Divert "No protocol specified" message to /dev/null?

[porphyry5]

OpenSUSE Leap 15.4

I use xterms a lot and am currently plagued by the message "No protocol specified" whenever I do anything with an xterm. There are many complaints about this message on the web, but apparently no explanations or solutions of the problem.
Can such messages be diverted to /dev/null or equivalent, rather than their proliferation completely obscuring the content of the xterm I happen to be working with?

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