Use android studio to create a new keystore:
After clicking OK, it prompts "android studio Cannot create new key or keystore". New creation failed.
Searching the Internet for solutions from experts, none of them work on Android Studio.
The later solution was: Use the keytool command in the CMD terminal to successfully create it.
Enter the password and name information according to the command line prompts. The keystore is generated successfully. Can be used in Android Studio to sign apk.