hyprsunset crash when quit hyprland?

[smartyin11]

I start hyprsunset in hyprland.conf:
exec-once = hyprsunset

every time when I quit hyprland, I get a log like this:

`systemd-coredump[9821]: [🡕] Process 9390 (hyprsunset) of user 1000 dumped core.

                                                   Stack trace of thread 9442:
                                                   #0  0x00007fd5dd69890c n/a (libc.so.6 + 0x9890c)
                                                   #1  0x00007fd5dd63e3a0 raise (libc.so.6 + 0x3e3a0)
                                                   #2  0x00007fd5dd62557a abort (libc.so.6 + 0x2557a)
                                                   #3  0x000055b15d00bded n/a (/usr/bin/hyprsunset + 0x8ded)
                                                   #4  0x00007fd5ddae55a4 execute_native_thread_routine (libstdc++.so.6 + 0xe55a4)
                                                   #5  0x00007fd5dd69698b n/a (libc.so.6 + 0x9698b)
                                                   #6  0x00007fd5dd71a9cc n/a (libc.so.6 + 0x11a9cc)
                                                   
                                                   Stack trace of thread 9440:
                                                   #0  0x00007fd5dd69f002 n/a (libc.so.6 + 0x9f002)
                                                   #1  0x00007fd5dd69316c n/a (libc.so.6 + 0x9316c)
                                                   #2  0x00007fd5dd6931b4 n/a (libc.so.6 + 0x931b4)
                                                   #3  0x00007fd5dd71c23e accept (libc.so.6 + 0x11c23e)
                                                   #4  0x000055b15d031929 n/a (/usr/bin/hyprsunset + 0x2e929)
                                                   #5  0x00007fd5ddae55a4 execute_native_thread_routine (libstdc++.so.6 + 0xe55a4)
                                                   #6  0x00007fd5dd69698b n/a (libc.so.6 + 0x9698b)
                                                   #7  0x00007fd5dd71a9cc n/a (libc.so.6 + 0x11a9cc)
                                                   
                                                   Stack trace of thread 9390:
                                                   #0  0x00007fd5dd69f002 n/a (libc.so.6 + 0x9f002)
                                                   #1  0x00007fd5dd69316c n/a (libc.so.6 + 0x9316c)
                                                   #2  0x00007fd5dd6937dc n/a (libc.so.6 + 0x937dc)
                                                   #3  0x00007fd5dd6962d2 pthread_cond_clockwait (libc.so.6 + 0x962d2)
                                                   #4  0x000055b15d00f7bb n/a (/usr/bin/hyprsunset + 0xc7bb)
                                                   #5  0x00007fd5dd627635 n/a (libc.so.6 + 0x27635)
                                                   #6  0x00007fd5dd6276e9 __libc_start_main (libc.so.6 + 0x276e9)
                                                   #7  0x000055b15d0108c5 n/a (/usr/bin/hyprsunset + 0xd8c5)
                                                   
                                                   Stack trace of thread 9441:
                                                   #0  0x00007fd5dd69f002 n/a (libc.so.6 + 0x9f002)
                                                   #1  0x00007fd5dd69316c n/a (libc.so.6 + 0x9316c)
                                                   #2  0x00007fd5dd6e3bd2 clock_nanosleep (libc.so.6 + 0xe3bd2)
                                                   #3  0x00007fd5dd6efc57 __nanosleep (libc.so.6 + 0xefc57)
                                                   #4  0x000055b15d0290e8 n/a (/usr/bin/hyprsunset + 0x260e8)
                                                   #5  0x00007fd5ddae55a4 execute_native_thread_routine (libstdc++.so.6 + 0xe55a4)
                                                   #6  0x00007fd5dd69698b n/a (libc.so.6 + 0x9698b)
                                                   #7  0x00007fd5dd71a9cc n/a (libc.so.6 + 0x11a9cc)
                                                   ELF object binary architecture: AMD x86-64`