Module Error JSON-stable-stringify not found

[ToastedToasty]

Hi guys, i just installed magic mirror on my raspberry pi 1 b and the server only function was initially working fine, however after enabling the neccessary configuration file i was met witht the error when trying to load both the alert and clock modules saying the module json-stable-stringify is not found. could any body try and help me out with as to what i need to do to fix this? thanks in advance.