tooltip component error

Just saw this in the console. Unsure of cause but looks like this line needs a null ref check

main.d9801642.chunk.js:118 Uncaught TypeError: Cannot read property '0' of undefined
    at a.triggerEvent (main.d9801642.chunk.js:118)
    at main.d9801642.chunk.js:118
    at Array.forEach (<anonymous>)
    at main.d9801642.chunk.js:118
    at main.d9801642.chunk.js:118
    at u (main.d9801642.chunk.js:87)
    at l (main.d9801642.chunk.js:87)
    at emit (main.d9801642.chunk.js:32)
    at t.value (main.d9801642.chunk.js:44)
    at t.value (main.d9801642.chunk.js:44)