Unable to obtain SRI hash for local resource

[mvantschip]

I am rending a server in hybrid mode and setting the Content-Security-Policy in astro.config.mjs as follows:

sri: {
      hashesModule: sriHashesModule,
      enableMiddleware: true
    },
    securityHeaders: {
      contentSecurityPolicy: {
        cspDirectives: {
          'default-src': "'self'",
          'font-src': "'self'",
          'img-src': "'self'",
          'form-action': "'self'",
          'connect-src': "'self'",
          'frame-ancestors': "'none'",
        }
      }
    }

When working in development, I get constant console errors. astro dev shows "Unable to obtain SRI hash for local resource", while my web console shows errors alike "The page’s settings blocked an inline style (style-src-elem) from being applied because it violates the following directive: “style-src 'self' 'hashes' 'hashes' 'hashes'". In addition, I get errors when dynamically loading certain content...

From all these errors, it seems that there is a problem with the SRI hashes, but I am not sure what I am doing wrong.

I setup my sriHashesModule as in the docs:

const rootDir = new URL('.', import.meta.url).pathname;
const sriHashesModule = resolve(rootDir, 'src', 'generated', 'sri.mjs');

Am I doing something wrong in setting this up?

Many thanks for your work and support!