TryCatch won't help in this scenario, you've been pushing strings and objects into the same array, thus prompting error when calling a function on a string variable =>

function solve(input) {
    // let output = ""
    class Meet {
        constructor(day, name) {
            this.day = day
            this.name = name
        }

        display() {
            // if (output = `Scheduled for ${this.day}`) {
            //     console.log(`${this.day} -> ${this.name}`)
            // } // ???
            console.log(`${this.day} -> ${this.name}`)
        }
    }

    let result = []
    input.map(x => {
        let [day, name] = x.split(" ")
        let myMeet = new Meet(day, name)
        result.push(myMeet)
        if (result.includes(day)) {
            console.log(`Conflict on ${day}!`)
        } else {
            // result.push(day) // No way !!!
            console.log(`Scheduled for ${day}`)
        }
    })

    result.forEach(x => x.display())

    // try {
    // } catch (e) {
    // }
}