Help!How to solve this problem in cvx?

[valuelighting (WangJiawei)]

I wanna use big-M method to solve the problem, my code is folling
but the error comes immediately,
what method or function can I use to solve the problem.
Thank you!

[valuelighting (WangJiawei)]

Here is my code

[valuelighting (WangJiawei)]

And here is the error that matlab gives