CodePudding user response:

Students object array does not exist, is a null pointer

CodePudding user response:

Clearly suggest a null pointer, check the students is empty...

CodePudding user response:

refer to the second floor and foliage quiet reply:

clearly suggest a null pointer, check the students is empty...

resolved is the issue of jump path

CodePudding user response:

reference 1st floor jio can reply:

students object does not exist, an array is a null pointer

has been solved