How do I make Appimages work in Linux-lite 5.8?

[SteveM2020]

 steve  ~  Documents  Programs  Viper  ls -l
total 131708
-rwxrwxr-x 1 steve steve 134868360 Apr 29 18:43 Viper_Browser-1-x86_64.AppImage
 steve  ~  Documents  Programs  Viper  ./Viper_Browser-1-x86_64.AppImage
Illegal instruction
 steve  ~  Documents  Programs  Viper  132  Viper_Browser-1-x86_64.AppImage
Viper_Browser-1-x86_64.AppImage: command not found
 steve  ~  Documents  Programs  Viper  127 