hi, when I run the qdec & command, the error show as below:

wangjian@linux-sner:~> qdec &
[1] 10941
wangjian@linux-sner:~> qdec.bin: error while loading shared libraries: libexpat.so.0:
cannot open shared object file: No such file or directory

 I do't know  how to deal with this problem. Could you tell me how to resolve this, Thank you!!!