I’m afraid there is something wrong in your libs.
Please refer to Failling in building sample from TLT-DEEPSTREAM - #15 by Morganh
More reference as below.
nvidia@nvidia:~/new_github/deepstream_tlt_apps$ ll -sh /usr/lib/aarch64-linux-gnu/libnvinfer_plugin*
0 lrwxrwxrwx 1 root root 26 Jun 6 13:00 /usr/lib/aarch64-linux-gnu/libnvinfer_plugin.so → libnvinfer_plugin.so.7.1.3*
0 lrwxrwxrwx 1 root root 26 Jun 6 13:00 /usr/lib/aarch64-linux-gnu/libnvinfer_plugin.so.7 → libnvinfer_plugin.so.7.1.3*
0 lrwxrwxrwx 1 root root 26 Sep 10 14:00 /usr/lib/aarch64-linux-gnu/libnvinfer_plugin.so.7.0.0 → libnvinfer_plugin.so.7.1.3*
4.5M -rwxr-xr-x 1 root root 4.5M Sep 10 14:00 /usr/lib/aarch64-linux-gnu/libnvinfer_plugin.so.7.1.3*
7.8M -rw-r–r-- 1 root root 7.8M Jun 6 13:00 /usr/lib/aarch64-linux-gnu/libnvinfer_plugin_static.a