outputing blank text on linux 4.18

[cfc4n]

Describe the bug

cfc4n@vm-server:~/project/ssldump/bin$ ./ecapture bash
2022/06/17 21:44:06 <nil>

To Reproduce

./ecapture

Screenshots
If applicable, add screenshots to help explain your problem.

Linux Server/Desktop (please complete the following information):

• OS: centos
• Kernel Version :Linux kernel 4.18
• Version: 0.1.5-20220313-69c1e0f