FATAL:zygote_communication_linux.cc(254)] Cannot communicate with zygote

[GlebObodovsky]

Hello.
Thank you for the great work on serverless-chrome.
We use it on AWS Lambda, but sometimes it fails with:

FATAL:zygote_communication_linux.cc(254)] Cannot communicate with zygote
#0 0x000003b7633c <unknown>
#1 0x000003b014c0 <unknown>
#2 0x000004c0f472 <unknown>
#3 0x000004c15593 <unknown>
#4 0x000003ab0ef5 <unknown>
#5 0x000004bfeec8 <unknown>
#6 0x000003aa9d31 <unknown>
#7 0x000003b9745d <unknown>
#8 0x000003b974e8 <unknown>
#9 0x000003aea99a <unknown>
#10 0x7f96a06a30ba __libc_start_main
#11 0x00000242402a _start

Received signal 6
#0 0x000003b7633c <unknown>
#1 0x000003b75ea1 <unknown>
#2 0x7f96a16077e0 <unknown>
#3 0x7f96a06b5c20 __GI_raise
#4 0x7f96a06b70c8 __GI_abort
#5 0x000003b74cf5 <unknown>
#6 0x000003b01929 <unknown>
#7 0x000004c0f472 <unknown>
#8 0x000004c15593 <unknown>
#9 0x000003ab0ef5 <unknown>
#10 0x000004bfeec8 <unknown>
#11 0x000003aa9d31 <unknown>
#12 0x000003b9745d <unknown>
#13 0x000003b974e8 <unknown>
#14 0x000003aea99a <unknown>
#15 0x7f96a06a30ba __libc_start_main
#16 0x00000242402a _start
  r8: 0000000000000000  r9: 00007fffc04088d0 r10: 0000000000000008 r11: 0000000000000246
  r12: 00007fffc0409050 r13: 000000000000005c r14: 00007fffc0409058 r15: 00007fffc0409060
  di: 0000000000000002  si: 00007fffc04088d0  bp: 00007fffc0408b20  bx: 0000000000000006
  dx: 0000000000000000  ax: 0000000000000000  cx: 00007f96a06b5c20  sp: 00007fffc04088d0
  ip: 00007f96a06b5c20 efl: 0000000000000246 cgf: 002b000000000033 erf: 0000000000000000
  trp: 0000000000000000 msk: 0000000000000000 cr2: 0000000000000000
  [end of stack trace]
  Calling _exit(1). Core file will not be generated.

With parameters:
"--headless",
"--disable-dev-shm-usage",
"--ignore-certificate-errors",
"--no-sandbox",
"--hide-scrollbars",
"--disable-gpu",
"--single-process",
"--proxy-server=",
"--proxy-bypass-list=*",
"--print-to-pdf={outputFileName} "file://{htmlFilePath}""

What's more interesting, it occurs seldomly without any particular reason. At least, we were not able to reproduce it manually. It seems like it doesn't fail with the same input twice.

Can you help us with understanding of the root of that problem?

[lifesaverluke]

Zygote won't work in Serverless environments. Luckily there is the --no-zygote parameter :-)