The window has reached the upper limit, which means
There are too many pages opened at the same time, reaching its saturation state, and there is no room for another window. This is because the developer of the network has set the maximum capacity of the page cache and the number of windows that can be opened, so when the limit is reached, a prompt will be given.
There are generally three reasons why the window reaches the upper limit
1. Reasons for slow network;
2. Turn off the machine and look at it;
3. The phone is out of memory.
Solution for window to reach the upper limit
Close several unused windows or reopen a new browser.