packetLen < 0 frequent error

[w3services_net]

2020-10-27 09:37:41.733 [STDERR] [15215] packetLen < 0
2020-10-27 09:37:45.060 [STDERR] [15216] packetLen < 0
2020-10-27 09:37:52.434 [STDERR] [15218] packetLen < 0

Why and how to fix this error?

 

[Cold-Egg]

Can not determine the issue, the message indicates that there was a communication error between LSWS and PHP. Need more information.

 

[w3services_net]

Yes. Its started from last week only or from latest update only. What details required as its still coming 2 -3 times in a day.

 

[flight750]

Hello, I think I have a fairly reliable method to reproduce this error, is there something else can I look at (or set traps for, etc) for getting more info in helping narrow the problem? Error logs mostly show the error pops once or twice max, but here's my best case for reproducing the problem:

2023-07-05 11:48:17.938 [STDERR] [UID:33][4953] packetLen < 0
2023-07-05 11:49:45.186 [STDERR] [UID:33][4952] packetLen < 0
2023-07-05 11:49:45.198 [STDERR] [UID:33][5014] packetLen < 0
2023-07-05 11:50:12.609 [STDERR] [UID:33][5029] packetLen < 0
2023-07-05 11:50:12.610 [STDERR] [UID:33][5033] packetLen < 0
2023-07-05 11:50:12.618 [STDERR] [UID:33][5034] packetLen < 0
2023-07-05 11:51:02.230 [STDERR] [UID:33][5046] packetLen < 0
2023-07-05 11:51:47.567 [STDERR] [UID:33][5047] packetLen < 0
2023-07-05 11:51:47.570 [STDERR] [UID:33][4948] packetLen < 0
2023-07-05 11:51:47.574 [STDERR] [UID:33][5043] packetLen < 0
2023-07-05 11:51:47.576 [STDERR] [UID:33][5048] packetLen < 0

I am currently in an isolated test server install for verifying if a copy of our production environment can move into, live and work acceptably in a VPS running OLS, so for now, I'm lots more flexible for any crash/burn testing than an actual production env.

It doesn't seem to impact any results in my testing, but "communication error between LSWS and PHP" sounds ugly enough to warrant asking.
Thanks!