TypeError: fields.flat is not a function

[EISCoding]

Can someone help me? I cant use /play or other commands.

https://prnt.sc/10pyvgo

[Takiyo0]

You need to update your node.js version because discord.js requires 12.0.0 or newer.

here's the link where i found the answer:
https://stackoverflow.com/questions/60934727/discord-js-messageembed-fields-flat-is-not-a-function
and here
discordjs/discord.js#3913 (comment)