Please follow the below steps:
1. When the prompt appears in an app, close it and go to Settings>Apps>See all apps>Find the App>Storage&cache>CLEAR STORAGE and CLEAR CACHE and try again (we recommend you back up the data before clearing).
2. Too many background programs are running, resulting in insufficient running memory to support the normal operation of system programs. We recommend you close and clean unnecessary background programs properly.
3. The mobile phone runs for a long time and the CPU is overloaded. Restart the phone and try again.
4. If the developer options are enabled and the phone shows "Application not responding" (ANR), we recommend you turn off the developer options.