Problems creating a backup in Total Upkeep

Hi, I’m testing the free version of Total Upkeep before I buy (client site). When I started the backup, it backed up the database, then hung. The first line of the log tells me:

Cannot add signal handlers, pcntl_async_signals function does not exist

Here is the complete log:

[2023-04-01 20:31:42 UTC] Cannot add signal handlers, pcntl_async_signals function does not exist.
[2023-04-01 20:31:42 UTC] Last error: Array
(
[type] => 2
[message] => file_get_contents(/home/georgezz/boldgrid_backup/logs-53fb8209-a31a790f95784dd2/archive-1680381102.log): failed to open stream: No such file or directory
[file] => /home/georgezz/public_html/wp-admin/includes/class-wp-filesystem-direct.php
[line] => 39
)

[2023-04-01 20:31:42 UTC] Backup process initialized.
[2023-04-01 20:31:42 UTC] Cannot add signal handlers, pcntl_async_signals function does not exist.
[2023-04-01 20:31:42 UTC] Backup process initialized.
[2023-04-01 20:31:42 UTC] Process id: 5977
[2023-04-01 20:31:42 UTC] ——————————————————————————–
[2023-04-01 20:31:42 UTC] Starting dump of database…
[2023-04-01 20:31:42 UTC] Memory usage – limit / current / peak memory usage: 1024M / 21850656 (20.84 MB) / 23895400 (23 MB)
[2023-04-01 20:31:42 UTC] Database info: Array
(
[wp_7jz6q9sn3b_actionscheduler_actions] => 18
[wp_7jz6q9sn3b_actionscheduler_claims] => 0
[wp_7jz6q9sn3b_actionscheduler_groups] => 2
[wp_7jz6q9sn3b_actionscheduler_logs] => 54
[wp_7jz6q9sn3b_adrotate] => 146
[wp_7jz6q9sn3b_adrotate_groups] => 13
[wp_7jz6q9sn3b_adrotate_linkmeta] => 257
[wp_7jz6q9sn3b_adrotate_schedule] => 95
[wp_7jz6q9sn3b_adrotate_stats] => 132957
[wp_7jz6q9sn3b_adrotate_stats_archive] => 0
[wp_7jz6q9sn3b_adrotate_tracker] => 7162
[wp_7jz6q9sn3b_ai_statistics] => 3947
[wp_7jz6q9sn3b_cleantalk_ac_log] => 3487
[wp_7jz6q9sn3b_cleantalk_connection_reports] => 0
[wp_7jz6q9sn3b_cleantalk_no_cookie_data] => 0
[wp_7jz6q9sn3b_cleantalk_sessions] => 0
[wp_7jz6q9sn3b_cleantalk_sfw] => 16301
[wp_7jz6q9sn3b_cleantalk_sfw_logs] => 145
[wp_7jz6q9sn3b_cleantalk_spamscan_logs] => 0
[wp_7jz6q9sn3b_cleantalk_ua_bl] => 64
[wp_7jz6q9sn3b_commentmeta] => 5884
[wp_7jz6q9sn3b_comments] => 35415
[wp_7jz6q9sn3b_db7_forms] => 2733
[wp_7jz6q9sn3b_email] => 144
[wp_7jz6q9sn3b_fvm_cache] => 0
[wp_7jz6q9sn3b_fvm_logs] => 0
[wp_7jz6q9sn3b_gglcptch_allowlist] => 0
[wp_7jz6q9sn3b_links] => 7
[wp_7jz6q9sn3b_monalisa] => 17
[wp_7jz6q9sn3b_options] => 1510
[wp_7jz6q9sn3b_pollsa] => 111
[wp_7jz6q9sn3b_pollsip] => 8351
[wp_7jz6q9sn3b_pollsq] => 15
[wp_7jz6q9sn3b_postmeta] => 327241
[wp_7jz6q9sn3b_posts] => 47367
[wp_7jz6q9sn3b_term_relationships] => 29825
[wp_7jz6q9sn3b_term_taxonomy] => 2087
[wp_7jz6q9sn3b_termmeta] => 0
[wp_7jz6q9sn3b_terms] => 2087
[wp_7jz6q9sn3b_tm_taskmeta] => 0
[wp_7jz6q9sn3b_tm_tasks] => 0
[wp_7jz6q9sn3b_ultimatetables] => 2
[wp_7jz6q9sn3b_usermeta] => 556
[wp_7jz6q9sn3b_users] => 15
[wp_7jz6q9sn3b_wfBlockedIPLog] => 1370
[wp_7jz6q9sn3b_wfBlocks7] => 15
[wp_7jz6q9sn3b_wfConfig] => 305
[wp_7jz6q9sn3b_wfCrawlers] => 200
[wp_7jz6q9sn3b_wfFileChanges] => 0
[wp_7jz6q9sn3b_wfFileMods] => 18197
[wp_7jz6q9sn3b_wfHits] => 1622
[wp_7jz6q9sn3b_wfHoover] => 0
[wp_7jz6q9sn3b_wfIssues] => 33
[wp_7jz6q9sn3b_wfKnownFileList] => 18197
[wp_7jz6q9sn3b_wfLiveTrafficHuman] => 0
[wp_7jz6q9sn3b_wfLocs] => 0
[wp_7jz6q9sn3b_wfLogins] => 2000
[wp_7jz6q9sn3b_wfNotifications] => 69
[wp_7jz6q9sn3b_wfPendingIssues] => 0
[wp_7jz6q9sn3b_wfReverseCache] => 13
[wp_7jz6q9sn3b_wfSNIPCache] => 0
[wp_7jz6q9sn3b_wfStatus] => 976
[wp_7jz6q9sn3b_wfTrafficRates] => 753
[wp_7jz6q9sn3b_wfls_2fa_secrets] => 0
[wp_7jz6q9sn3b_wfls_role_counts] => 0
[wp_7jz6q9sn3b_wfls_settings] => 30
[wp_7jz6q9sn3b_wpfm_backup] => 0
[wp_7jz6q9sn3b_wpmailsmtp_debug_events] => 0
[wp_7jz6q9sn3b_wpmailsmtp_tasks_meta] => 0
[wp_7jz6q9sn3b_xmlgooglemaps] => 12
[wp_7jz6q9sn3b_xmlgooglemaps_cache] => 3
[wp_7jz6q9sn3b_xmlgooglemaps_gpxfile] => 0
[wp_7jz6q9sn3b_xmlgooglemaps_gpxfile_item] => 0
[wp_7jz6q9sn3b_yoast_indexable] => 29766
[wp_7jz6q9sn3b_yoast_indexable_hierarchy] => 29718
[wp_7jz6q9sn3b_yoast_migrations] => 23
[wp_7jz6q9sn3b_yoast_primary_term] => 1328
[wp_7jz6q9sn3b_yoast_seo_links] => 27054
[wp_7jz6q9sn3b_yoast_seo_meta] => 5977
)

[2023-04-01 20:31:57 UTC] Cannot add signal handlers, pcntl_async_signals function does not exist.
[2023-04-01 20:31:57 UTC] Backup process running: Yes (pgid = 5977)
[2023-04-01 20:32:00 UTC] Cannot add signal handlers, pcntl_async_signals function does not exist.

Thanks in advance for any insights you can give me.❤️
Lori