Asto SSR generated code doesn't run on older versions of iOS

I am hosting astro SSR site on Netlify. It works well everywhere except when I test on iPhone 6 and older. Basically all script executions are stopped and the site is no longer interactive.

Errors from Safari on iPhone 5SE Simulator:

[Error] SyntaxError: Unexpected token '.'

[Error] The source list for Content Security Policy directive 'script-src' contains an invalid source: ''strict-dynamic''. It will be ignored.

[Error] The source list for Content Security Policy directive 'script-src' contains an invalid source: ''strict-dynamic''. It will be ignored. (x2)

[Error] Unhandled Promise Rejection: SyntaxError: Unexpected token '?'

[Error] Unhandled Promise Rejection: SyntaxError: Unexpected token '?'

I am not really sure how to fix this issue. Any help would be appreciated.

PS: I used svelte for building astro islands and google recaptcha(v3) in the page that is being tested. The page works fine on development environment.