missing StreamBuf library Error

[Coşkun ERGAN]

..\AppData\Local\Temp.arduinoIDE-unsaved202396-6128-pcq1an.1gml\TCP-to-RTU-Simulator\TCP-to-RTU-Simulator.ino:14:10: fatal error: StreamBuf.h: No such file or directory
14 | #include <StreamBuf.h>
| ^~~~~~~~~~~~~
compilation terminated.

exit status 1

Compilation error: StreamBuf.h: No such file or directory

Somebody can help me plz.

How can i fix?

[Alexander Emelianov]

https://github.com/emelianov/StreamBuf