RSS Error: WP HTTP Error: A valid URL was not provided.
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RSS widget doesn’t work when the 2 sites are on same server.
It works with the workaround i found there:
https://ww.wp.xz.cn/support/topic/rss-wp-http-error-a-valid-url-was-not-provided-reject_unsafe_urls
adding the code in functions.php
But this can’t be the only solution because it’s unsafe.
How to open only one or more specific URL?
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