Error: [number-to-bn] while converting number “0xNaN” to BN.js instance, error: invalid number value. Value must be an integer, hex string, BN or BigNumber instance. Note, decimals are not supported.
Try reinstalling MetaMask on your device. Make sure you have all the keys to your accounts backed up: your Secret Recovery Phrase, private keys (imported accounts), and passwords before you uninstall.