X_SEO_CARD_BROWSER_MISSING
Means
a static build with social cards found no browser to photograph them
Typical cause
a site/ route declares og.capture, x build --target static photographs each card in Chrome, and no CHROME_PATH or PUPPETEER_EXECUTABLE_PATH is set and no browser is installed at a probed path
Fix
export CHROME_PATH=/usr/bin/google-chrome — any Chrome, Chromium or Edge binary; or drop og.capture from the route. The gate build passes --no-capture and needs none