Requirements Failed [RES] => Array [INSTALL] => Fail

I have 32 sites using Duplicator Pro and packages were being created successfully until about a week ago when three of the sites failed, the error is “Requirements Failed”.
I clicked on that message and on this displayed on the page that opened:

====================================================================
!RUNTIME ERROR!
———————————————————————
MESSAGE:
Requirements Failed
DETAILS:
Array
(
[PHP] => Array
(
[SAFE_MODE] => Pass
[VERSION] => Pass
[ZIP] => Pass
[FUNC_1] => Pass
[FUNC_2] => Pass
[FUNC_3] => Pass
[ALL] => Pass
)
[IO] => Array
(
[WPROOT] => Pass
[SSDIR] => Pass
[SSTMP] => Pass
[ALL] => Pass
)
[SRV] => Array
(
[MYSQL_VER] => Pass
[MYSQL_ESC] => Pass
[ALL] => Pass
)
[RES] => Array
(
[INSTALL] => Fail
)
[Success] =>
)
———————————————————————
TRACE:
1. class.pack.runner.php : error (511)
2. class.web.services.php : process (674)
3. class-wp-hook.php : process_worker (287)
4. class-wp-hook.php : apply_filters (311)
5. plugin.php : do_action (478)
6. admin-ajax.php : do_action (190)
====================================================================

I have looked online and in the support forum and I haven’t been able to find a solution. Please can you tell me what is causing this error.
All of the sites are using the latest version, 3.8.9.1