Why is my custom.rc file not executing frida-server while it is being executed?

I am trying to run frida-server on boot on LDplayer Android 9. For this I found this post

I have used the INIT method and created a custom.rc file:

    #/etc/init/custom.rc# execute the binary when boot is completedon property:sys.boot_completed=1    write /data/local/tmp/here.txt here    exec_background u:r:magisk:s0 -- /system/bin/frida-server

The device is rooted, Frida-server is CHMODded 755, SElinux SetEnforce is 0, and after I reboot I can see the here.txt file. So the RC file is being executed.

However, frida-server is not starting. I have no idea where to go from here.