The issue occurs when requesting a certificate when a server certificate with the same alias already exists in the certificate database.
Due to this issue, users cannot renew/request certificate.
change the alias name or store it to another keystore:
keytool -genkey -v -keystore debug.keystore D:\.android\debug.keystore -storepass android -alias androiddebugkey -keypass android -keyalg RSA -keysize 2048 -validity 10000