Batch remove all missing files from all pages in Navidrome's "Missing files" list - copy-paste into the console and run

navidromeRemoveAllMissingFiles.js

(async () => {
    const wait = (time) => new Promise(resolve => setTimeout(resolve, time))

    const countElements = () => document.querySelectorAll('.MuiTableRow-root').length

    while(countElements()) {
        const selectAllInput = document.querySelector('.MuiIconButton-label input')
    
        selectAllInput.click()
    
        await wait(300)

        const removeButton = document.querySelector('button[aria-label="Remove"]')
        
        removeButton.click()
        
        await wait(300)
        
        const confirmButton = document.querySelector('button.ra-confirm')

        confirmButton.click()

        await wait(1000)
    }
})()

Bravo! worked like lighning! thanks