run script has tcp_psh issue.

[mmxcraft]

When I run script in tcp/epoll/epoll_out_edge.pkt, it has an issue for tcp_psh? How can I resolve this?

my os version: Ubuntu 18.04.4 LTS
4.15.0-47-generic #50-Ubuntu SMP Wed Mar 13 10:44:52 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

./packetdrill -v ../tcp/epoll/epoll_out_edge.pkt
socket syscall: 1605520417.515781
setsockopt syscall: 1605520417.515832
bind syscall: 1605520417.515856
listen syscall: 1605520417.515866
inbound injected packet: 0.000125 S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7>
outbound sniffed packet: 0.000213 S. 3303488705:3303488705(0) ack 1 win 29200 <mss 1460,nop,nop,sackOK,nop,wscale 8>
inbound injected packet: 0.000355 . 1:1(0) ack 3303488706 win 257
accept syscall: 1605520417.516149
setsockopt syscall: 1605520417.516164
getsockopt syscall: 1605520417.516176
fcntl syscall: 1605520417.516188
epoll_create syscall: 1605520417.516199
epoll_ctl syscall: 1605520417.516224
epoll_wait syscall: 1605520417.516237
epoll_wait syscall: 1605520417.516246
write syscall: 1605520417.516316
epoll_wait syscall: 1605520417.516326
outbound sniffed packet: 0.000530 . 3303488706:3303493706(5000) ack 1 win 115
outbound sniffed packet: 0.000549 . 3303493706:3303498706(5000) ack 1 win 115
../tcp/epoll/epoll_out_edge.pkt:38: error handling packet: live packet field tcp_psh: expected: 1 (0x1) vs actual: 0 (0x0)
script packet: 0.000574 P. 1:10001(10000) ack 1
actual packet: 0.000549 . 1:10001(10000) ack 1 win 115