What is the pointer error of information import display in Fujian middle school students' comprehensive quality evaluation information management system?

1. Invalid pointer: When importing information, the program may use an incorrectly initialized or released pointer, resulting in an access error of the invalid pointer. In view of this situation, check the code of information import operation in the program to ensure that all pointers are initialized correctly and released correctly after use.

2. Memory leak: In the process of importing information, the program may not correctly release the previously allocated memory space, resulting in a pointer error. In view of this situation, please check the memory management to ensure proper memory management in the information import operation, so as to avoid memory leakage.

3. Data corruption: The information to be imported may contain damaged or incomplete data, which may lead to pointer errors. In this case, please check whether the information to be imported is complete and correct. If damaged or incomplete data is found, it needs to be repaired or re-imported.