ltrace= sudo: ./UE4: command not found

__libc_start_main(0x7f8d52f63340, 3, 0x7ffd9c9bf028, 0x7f8d52f7a9c0 <unfinished ...>
__errno_location()                                                                     = 0x7f8d52ddb6b0
setlocale(LC_ALL, "")                                                                  = "de_DE.UTF-8"
bindtextdomain("sudo", "/usr/share/locale")                                            = "/usr/share/locale"
textdomain("sudo")                                                                     = "sudo"
tzset(0x7f8d5270ac80, 1, 1, 0x6f6475)                                                  = 1
__errno_location()                                                                     = 0x7f8d52ddb6b0
geteuid()                                                                              = 1000
strchr("sudo", '/')                                                                    = nil
dlsym(0xffffffffffffffff, "getenv")                                                    = 0x7f8d52386830
strlen("/usr/local/sbin:/usr/local/bin:/"...)                                          = 88
malloc(89)                                                                             = 0x7f8d55069c10
memcpy(0x7f8d55069c10, "/usr/local/sbin:/usr/local/bin:/"..., 88)                      = 0x7f8d55069c10
strchr("/usr/local/sbin:/usr/local/bin:/"..., ':')                                     = ":/usr/local/bin:/usr/sbin:/usr/b"...
__snprintf_chk(0x7ffd9c9bdde0, 4096, 1, 4096)                                          = 20
access("/usr/local/sbin/sudo", 1)                                                      = -1
strchr("/usr/local/bin:/usr/sbin:/usr/bi"..., ':')                                     = ":/usr/sbin:/usr/bin:/sbin:/bin:/"...
__snprintf_chk(0x7ffd9c9bdde0, 4096, 1, 4096)                                          = 19
access("/usr/local/bin/sudo", 1)                                                       = -1
strchr("/usr/sbin:/usr/bin:/sbin:/bin:/u"..., ':')                                     = ":/usr/bin:/sbin:/bin:/usr/games:"...
__snprintf_chk(0x7ffd9c9bdde0, 4096, 1, 4096)                                          = 14
access("/usr/sbin/sudo", 1)                                                            = -1
strchr("/usr/bin:/sbin:/bin:/usr/games:/"..., ':')                                     = ":/sbin:/bin:/usr/games:/usr/loca"...
__snprintf_chk(0x7ffd9c9bdde0, 4096, 1, 4096)                                          = 13
access("/usr/bin/sudo", 1)                                                             = 0
free(0x7f8d55069c10)                                                                   = <void>
__xstat(1, "/usr/bin/sudo", 0x7ffd9c9bdd50)                                            = 0
dcgettext(0, 0x7f8d52f7ce60, 5, -1)                                                    = 0x7f8d52dfdc1b
__errno_location()                                                                     = 0x7f8d52ddb6b0
dcgettext(0, 0x7f8d52f7ce60, 5, 482)                                                   = 0x7f8d52dfdc1b
__errno_location()                                                                     = 0x7f8d52ddb6b0
__vasprintf_chk(0x7ffd9c9bdc10, 1, 0x7f8d52dfdc1b, 0x7ffd9c9bdc60)                     = 149
dcgettext(0x7f8d52f7d4c6, 0x7f8d52f7e60e, 5, 0)                                        = 0x7f8d52dfd978
__vfprintf_chk(0x7f8d5270a1c0, 1, 0x7f8d52dfd978, 0x7ffd9c9bdb30sudo: Effektive UID ist nicht 0. Liegt /usr/bin/sudo auf einem Dateisystem mit gesetzter »nosuid«-Option oder auf einem NFS-Dateisystem ohne Root-Rechte?
)                      = 156
free(0x7f8d55066490)                                                                   = <void>
exit(1 <unfinished ...>
__cxa_finalize(0x7f8d53183528, 0, 0, 1)                                                = 0x7f8d5270b290
+++ exited (status 1) +++