Latest fixes and solutions for ssr errors on FixDevs.https://fixdevs.com/enWed, 20 May 2026 00:00:00 GMThttps://fixdevs.com/blog/astro-content-collections-not-working/https://fixdevs.com/blog/astro-content-collections-not-working/How to fix Astro content collections errors — content/config.ts moved to content.config.ts, glob loader patterns, schema validation, references between collections, live reload on add/remove, and remote loaders.Wed, 20 May 2026 00:00:00 GMTastrocontentmarkdownmdxtypescriptssrFixDevshttps://fixdevs.com/blog/astro-server-islands-not-working/https://fixdevs.com/blog/astro-server-islands-not-working/How to fix Astro 5 server islands — server:defer directive ignored, fallback slot missing, cookies/headers in deferred component, output config mismatch, dynamic island fetch URL, and caching the static shell.Wed, 20 May 2026 00:00:00 GMTastrossrperformancecachingdeferred-renderingfrontendFixDevshttps://fixdevs.com/blog/next-themes-not-working/https://fixdevs.com/blog/next-themes-not-working/How to fix next-themes errors — hydration mismatch on mount, FOUC flash before theme applies, Tailwind dark: classes not switching, ThemeProvider in App Router, defaultTheme system not respected, and TypeScript types.Wed, 20 May 2026 00:00:00 GMTnextjsreactdark-modetailwindnext-themesssrFixDevshttps://fixdevs.com/blog/react-router-7-not-working/https://fixdevs.com/blog/react-router-7-not-working/How to fix React Router v7 errors — framework mode vs library mode setup, loader/action data type narrowing, route module exports missing, single-fetch revalidation, hydration mismatch, and Remix v2 migration paths.Mon, 18 May 2026 00:00:00 GMTreactreact-routerremixtypescriptvitessrFixDevs