Looks for linking libcaffe.so, the linker fails to find libopenblas.so.
Do you have openblas installed ?
sudo apt search openblas |grep installed
should tell you if you have a version installed.
If not, you have to install openblas first :
sudo apt-get install libopenblas-base
When or if already installed, you have to find in which folder is installed libopenblas.so.
If libopenblas.so is in standard /usr/lib, you can skip this step.
Otherwise, add this path to to environment variable LD_LIBRARY_PATH.
For example, if libopenblas.so is in folder /opt/openblas/lib, in your shell type