The reason for that error maybe written inside this log messages :
libxl: libxl_event.c:855:libxl__ev_xswatch_deregister: remove watch for path
@releaseDomain: Descrittore di file errato
libxl: libxl_event.c:855:libxl__ev_xswatch_deregister: remove watch for path
@releaseDomain: Bad file descriptor
libxl: libxl_event.c:855:libxl__ev_xswatch_deregister: remove watch for path
@releaseDomain: Bad file descriptor
libxl: libxl_arm.c:1538:libxl__arch_domain_create_info_setdefault: Converting PV guest to
PVH.
libxl: libxl_arm.c:1539:libxl__arch_domain_create_info_setdefault: Arm guest are now PVH.
libxl: libxl_arm.c:1540:libxl__arch_domain_create_info_setdefault: Please fix your
configuration file/toolstack.
libxl: libxl_bootloader.c:648:bootloader_finished: Domain 1:bootloader failed - consult
logfile /var/log
/xen/bootloader.1.log
libxl: libxl_exec.c:117:libxl_report_child_exitstatus: bootloader [2850] exited with error
status 1
libxl: libxl_create.c:1640:domcreate_rebuild_done: Domain 1:cannot (re-)build domain: -3
libxl: libxl_arm.c:1538:libxl__arch_domain_create_info_setdefault: Converting PV guest to
PVH.
libxl: libxl_arm.c:1539:libxl__arch_domain_create_info_setdefault: Arm guest are now PVH.
libxl: libxl_arm.c:1540:libxl__arch_domain_create_info_setdefault: Please fix your
configuration file/toolstack.
libxl: libxl_bootloader.c:648:bootloader_finished: Domain 2:bootloader failed - consult
logfile /var/log
/xen/bootloader.2.log
libxl: libxl_exec.c:117:libxl_report_child_exitstatus: bootloader [2879] exited with error
status 1
libxl: libxl_create.c:1640:domcreate_rebuild_done: Domain 2:cannot (re-)build domain: -3
libxl: libxl_arm.c:1538:libxl__arch_domain_create_info_setdefault: Converting PV guest to
PVH.
libxl: libxl_arm.c:1539:libxl__arch_domain_create_info_setdefault: Arm guest are now PVH.
libxl: libxl_arm.c:1540:libxl__arch_domain_create_info_setdefault: Please fix your
configuration file/toolstack.
libxl: libxl_bootloader.c:648:bootloader_finished: Domain 3:bootloader failed - consult
logfile /var/log/xen/bootloader.3.log
libxl: libxl_exec.c:117:libxl_report_child_exitstatus: bootloader [2892] exited with error
status 1
libxl: libxl_create.c:1640:domcreate_rebuild_done: Domain 3:cannot (re-)build domain: -3
libxl: libxl_event.c:855:libxl__ev_xswatch_deregister: remove watch for path
@releaseDomain: Descrittore di file errato
libxl: libxl_arm.c:1538:libxl__arch_domain_create_info_setdefault: Converting PV guest to
PVH.
libxl: libxl_arm.c:1539:libxl__arch_domain_create_info_setdefault: Arm guest are now PVH.
libxl: libxl_arm.c:1540:libxl__arch_domain_create_info_setdefault: Please fix your
configuration file/toolstack.
libxl: libxl_bootloader.c:648:bootloader_finished: Domain 1:bootloader failed - consult
logfile /var/log/xen/bootloader.1.log
libxl: libxl_exec.c:117:libxl_report_child_exitstatus: bootloader [3025] exited with error
status 1
libxl: libxl_create.c:1640:domcreate_rebuild_done: Domain 1:cannot (re-)build domain: -3
libxl: libxl_arm.c:1538:libxl__arch_domain_create_info_setdefault: Converting PV guest to
PVH.
libxl: libxl_arm.c:1539:libxl__arch_domain_create_info_setdefault: Arm guest are now PVH.
libxl: libxl_arm.c:1540:libxl__arch_domain_create_info_setdefault: Please fix your
configuration file/toolstack.
libxl: libxl_bootloader.c:648:bootloader_finished: Domain 2:bootloader failed - consult
logfile /var/log/xen/bootloader.2.log
libxl: libxl_exec.c:117:libxl_report_child_exitstatus: bootloader [3030] exited with error
status 1
libxl: libxl_create.c:1640:domcreate_rebuild_done: Domain 2:cannot (re-)build domain: -3
Traceback (most recent call last):
File "/usr/lib/xen-4.17/bin/pygrub", line 27, in <module>
import xenfsimage
ImportError: libxenfsimage.so.4.17: cannot open shared object file: No such file or
directory