Make sure there are no .htaccess
files enforcing cross origin embedder policy rules.
# Cross-Origin-Embedder-Policy: require-corp
<IfModule mod_headers.c>
Header set Cross-Origin-Embedder-Policy: "require-corp"
</IfModule>
# Cross-Origin-Opener-Policy: same-origin
<IfModule mod_headers.c>
Header set Cross-Origin-Opener-Policy: "same-origin"
</IfModule>