Help in Vue JS 3 to Nuxt 3 conversion in setting DarkMode

We need help in converting the project from Vue 3 to Nuxt 3. We are facing an issue in setting up dark mode for next js while we are converting a repository that was designed in vue3 to work in nuxt3 dark mode is perfectly working in vue3 we need help setting up dark mode in nuxt3 all other features are completely working only the dark mode is not working. The issue seems to be with local storage and were might be some other issue that we together need to figure out. We need help in debugging the project and getting this one error solved. Kindly let us know if we can work together and solve this error.