When you encounter the following problem, you can use this function.
1. You need to check whether there are element entities with illegal attributes in the current project.
Step 1: Click Tool > Validity Check in the menu bar.
1. If there is no illegal entity in the current floor, the prompt as shown below pops up.
2. If there is an illegal entity in the current floor, the prompt as shown below pops up. You can modify the entity according to the prompt.