Jobber randomly stops working after some time

[zclod]

system:
Debian 10.8
4gb ram
jobber 1.4.4

Issue
I've set up jobber installed with .deb package , if I do a "jobber test" the jobs they are working but as soon as they should run as scheduled job (one daily job and one weekly job) jobber stops working and if I try any jobber command (eg. jobber list) it show the following error
dial unix /var/jobber/1000/cmd.sock: connect: connection refused

$ systemctl status jobber
● jobber.service - Replacement for cron, with sophisticated status-reporting and error-handling
Loaded: loaded (/lib/systemd/system/jobber.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2021-04-23 11:25:45 CEST; 2 days ago
Main PID: 8987 (jobbermaster)
Tasks: 10 (limit: 4580)
Memory: 9.3M
CGroup: /system.slice/jobber.service
└─8987 /usr/lib/x86_64-linux-gnu/jobbermaster

jobber file has the correct permissions
-rw------- 1 cla cla 2560 Apr 23 11:27 .jobber

if I do a systemctl restart jobber it start working again (at least the jobber commands) until the next scheduled job.

[zclod]

Apr 27 02:01:24 debian-4gb-nbg1-2 jobbermaster[16866]: /opt/hostedtoolcache/go/1.14.3/x64/src/runtime/mem_linux.go:169
Apr 27 02:01:24 debian-4gb-nbg1-2 jobbermaster[16866]: runtime.(*mheap).sysAlloc(0xc66f00, 0x400000, 0x0, 0x0)
Apr 27 02:01:24 debian-4gb-nbg1-2 jobbermaster[16866]: /opt/hostedtoolcache/go/1.14.3/x64/src/runtime/malloc.go:715 +0
Apr 27 02:01:24 debian-4gb-nbg1-2 jobbermaster[16866]: runtime.(*mheap).grow(0xc66f00, 0x1, 0x0)
Apr 27 02:01:24 debian-4gb-nbg1-2 jobbermaster[16866]: /opt/hostedtoolcache/go/1.14.3/x64/src/runtime/mheap.go:1286 +0
Apr 27 02:01:24 debian-4gb-nbg1-2 jobbermaster[16866]: runtime.(*mheap).allocSpan(0xc66f00, 0x1, 0xd352a00, 0xc7b588, 0x1)
Apr 27 02:01:24 debian-4gb-nbg1-2 jobbermaster[16866]: /opt/hostedtoolcache/go/1.14.3/x64/src/runtime/mheap.go:1124 +0
Apr 27 02:01:24 debian-4gb-nbg1-2 jobbermaster[16866]: runtime.(*mheap).alloc.func1()
Apr 27 02:01:24 debian-4gb-nbg1-2 jobbermaster[16866]: /opt/hostedtoolcache/go/1.14.3/x64/src/runtime/mheap.go:871 +0x
Apr 27 02:01:24 debian-4gb-nbg1-2 jobbermaster[16866]: Failed to launch runner for cla: jobberrunner for cla