Why can't the database table be written into data

The phenomenon and background of the problem

Have you answered ,
sqlyog The created table is added to 25 That's ok , You can't add any more , What's going on?
The insert command was run successfully , But no more data can be added , You can't save data directly by entering data in the table ,
Is that the upper limit ？ How to solve the upper limit , There is still data to be written