Resolved Strange code in my regs

[JuanCar]

Server operating system version

Centos 7

Plesk version and microupdate number

Obsidian 18.0.48

I've see that in my log access there are some lines with code 400 and message like
"ZG\x00\x00\x00\x05\x00+\x0E\x01\x00"
or
\x16\x03\x01\x00{\x01\x00\x00w\x03\x03Yj\xF0K\xAA2\x06\x83\x13pg\xECWH#o\xAF#\x05\x1C\x99-5\x8F\xFD\xFB\x5C\xE2\x87v=\x22\x00\x00\x1A\xC0/\xC0+\xC0\x11\xC0\x07\xC0\x13\xC0\x09\xC0\x14\xC0

Instead of habitual GET.
Does anybody know the meaning of this code?
ThanksAttach files

 

[Kaspar]

Probably a malformed TLS/SSL handshake. See reference:
1, 2 and 3.

 

[JuanCar]

Thanks, now I understand the problem