The absolute value of Z + 1 is? (1 + Z is the denominator) if the complex Z satisfies 1 + Z / 1 = I the sooner the better

The absolute value of Z + 1 is? (1 + Z is the denominator) if the complex Z satisfies 1 + Z / 1 = I the sooner the better

Analysis, from the title: 1 = (Z + 1) I, so, Z + 1 = - I
Then the absolute value of Z + 1 is: | Z + 1 | = I