File "/wrkdirs/usr/ports/audio/beatslash-lv2/work/beatslash-lv2-1.0.6/waflib/Build.py", line 1179, in do_install
    self.copy_fun(src, tgt)
  File "/wrkdirs/usr/ports/audio/beatslash-lv2/work/beatslash-lv2-1.0.6/waflib/Build.py", line 1083, in copy_fun
    shutil.copy2(src, tgt)
  File "/usr/local/lib/python3.7/shutil.py", line 267, in copy2
    copystat(src, dst, follow_symlinks=follow_symlinks)
  File "/usr/local/lib/python3.7/shutil.py", line 206, in copystat
    follow_symlinks=follow)
FileNotFoundError: [Errno 2] No such file or directory