bash-4.4$ chmod +x Falkon-3.0.1.AppImage
bash-4.4$ ./Falkon-3.0.1.AppImage
Falkon: Creating new profile directory
Error creating database schema "No query Unable to fetch row"
Could not find QtWebEngineProcess
[13892:13892:0123/203516.390352:FATAL:zygote_host_impl_linux.cc(182)] Check failed: ReceiveFixedMessage(fds[0], kZygoteBootMessage, sizeof(kZygoteBootMessage), &boot_pid).
#0 0x7f4a54e660a5 <unknown>
#1 0x7f4a54e7beca <unknown>
#2 0x7f4a544befc3 <unknown>
#3 0x7f4a544bdc3b <unknown>
#4 0x7f4a544be219 <unknown>
#5 0x7f4a5410193a <unknown>
#6 0x7f4a54106e76 <unknown>
#7 0x7f4a53c24600 <unknown>
#8 0x7f4a53c25b25 <unknown>
#9 0x7f4a53bb9a61 QtWebEngineCore::BrowserContextAdapter::defaultContext()
#10 0x7f4a59b6f218 QWebEngineProfile::defaultProfile()
#11 0x7f4a59eafe78 MainApplication::MainApplication()
#12 0x00000040358d main
#13 0x7f4a4e99811b __libc_start_main
#14 0x0000004038d5 <unknown>

Received signal 6
#0 0x7f4a54e660a5 <unknown>
#1 0x7f4a53ba7141 <unknown>
#2 0x7f4a54e6643d <unknown>
#3 0x7f4a4e9abf30 <unknown>
#4 0x7f4a4e9abeab __GI_raise
#5 0x7f4a4e9965b9 __GI_abort
#6 0x7f4a54e65dc5 <unknown>
#7 0x7f4a54e7c1ed <unknown>
#8 0x7f4a544befc3 <unknown>
#9 0x7f4a544bdc3b <unknown>
#10 0x7f4a544be219 <unknown>
#11 0x7f4a5410193a <unknown>
#12 0x7f4a54106e76 <unknown>
#13 0x7f4a53c24600 <unknown>
#14 0x7f4a53c25b25 <unknown>
#15 0x7f4a53bb9a61 QtWebEngineCore::BrowserContextAdapter::defaultContext()
#16 0x7f4a59b6f218 QWebEngineProfile::defaultProfile()
#17 0x7f4a59eafe78 MainApplication::MainApplication()
#18 0x00000040358d main
#19 0x7f4a4e99811b __libc_start_main
#20 0x0000004038d5 <unknown>
  r8: 0000000000000000  r9: 00007ffe5936bf10 r10: 0000000000000008 r11: 0000000000000246
 r12: 00007ffe5936c190 r13: 00000000000000ac r14: 00007ffe5936c3c0 r15: 00007ffe5936cb30
  di: 0000000000000002  si: 00007ffe5936bf10  bp: 00007f4a4f670de0  bx: 0000000000000006
  dx: 0000000000000000  ax: 0000000000000000  cx: 00007f4a4e9abeab  sp: 00007ffe5936bf10
  ip: 00007f4a4e9abeab 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.
bash-4.4$ ./Falkon-3.0.1.AppImage | nc termbin.com 9999
Could not find QtWebEngineProcess
[13920:13920:0123/203545.437265:FATAL:zygote_host_impl_linux.cc(182)] Check failed: ReceiveFixedMessage(fds[0], kZygoteBootMessage, sizeof(kZygoteBootMessage), &boot_pid).
#0 0x7f615fce10a5 <unknown>
#1 0x7f615fcf6eca <unknown>
#2 0x7f615f339fc3 <unknown>
#3 0x7f615f338c3b <unknown>
#4 0x7f615f339219 <unknown>
#5 0x7f615ef7c93a <unknown>
#6 0x7f615ef81e76 <unknown>
#7 0x7f615ea9f600 <unknown>
#8 0x7f615eaa0b25 <unknown>
#9 0x7f615ea34a61 QtWebEngineCore::BrowserContextAdapter::defaultContext()
#10 0x7f61649ea218 QWebEngineProfile::defaultProfile()
#11 0x7f6164d2ae78 MainApplication::MainApplication()
#12 0x00000040358d main
#13 0x7f615981311b __libc_start_main
#14 0x0000004038d5 <unknown>

Received signal 6
#0 0x7f615fce10a5 <unknown>
#1 0x7f615ea22141 <unknown>
#2 0x7f615fce143d <unknown>
#3 0x7f6159826f30 <unknown>
#4 0x7f6159826eab __GI_raise
#5 0x7f61598115b9 __GI_abort
#6 0x7f615fce0dc5 <unknown>
#7 0x7f615fcf71ed <unknown>
#8 0x7f615f339fc3 <unknown>
#9 0x7f615f338c3b <unknown>
#10 0x7f615f339219 <unknown>
#11 0x7f615ef7c93a <unknown>
#12 0x7f615ef81e76 <unknown>
#13 0x7f615ea9f600 <unknown>
#14 0x7f615eaa0b25 <unknown>
#15 0x7f615ea34a61 QtWebEngineCore::BrowserContextAdapter::defaultContext()
#16 0x7f61649ea218 QWebEngineProfile::defaultProfile()
#17 0x7f6164d2ae78 MainApplication::MainApplication()
#18 0x00000040358d main
#19 0x7f615981311b __libc_start_main
#20 0x0000004038d5 <unknown>
  r8: 0000000000000000  r9: 00007ffd213420e0 r10: 0000000000000008 r11: 0000000000000246
 r12: 00007ffd21342360 r13: 00000000000000ac r14: 00007ffd21342590 r15: 00007ffd21342d00
  di: 0000000000000002  si: 00007ffd213420e0  bp: 00007f615a4ebde0  bx: 0000000000000006
  dx: 0000000000000000  ax: 0000000000000000  cx: 00007f6159826eab  sp: 00007ffd213420e0
  ip: 00007f6159826eab 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.
bash-4.4$