problems about Installing multiple versions of gnuradio

[mangrove_forest]

I want to install two versions of gnuradio on one machine. I first installed gnuradio 3.7 in default directory /usr/local/（and it works normally）, and then installed the gnuradio 3.9 in the directory /opt/gnuradio. But the gnuradio 3.7 can't run again,as follows:

$ gnuradio-companion

Traceback (most recent call last):

File "/usr/local/bin/gnuradio-companion", line 99, in

run_main()

File "/usr/local/bin/gnuradio-companion", line 92, in run_main

exit(main())

File "/usr/local/lib/python2.7/dist-packages/gnuradio/grc/main.py", line 51, in main

install_prefix=gr.prefix()

File "/usr/local/lib/python2.7/dist-packages/gnuradio/grc/gui/Platform.py", line 38, in init

_Platform.init(self, *args, **kwargs)

File "/usr/local/lib/python2.7/dist-packages/gnuradio/grc/core/Platform.py", line 75, in init

self.build_block_library()

File "/usr/local/lib/python2.7/dist-packages/gnuradio/grc/core/Platform.py", line 175, in build_block_library

hide_bokeh_gui_options_if_not_installed(self.blocks['options'])

File "/usr/local/lib/python2.7/dist-packages/gnuradio/grc/core/utils/odict.py", line 35, in getitem

return self._data[key]

KeyError: 'options'

what can i do??????????

when i run gnuradio 3.9 in the directory /opt/gnuradio/bin as follows, it runs:

$export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/gnuradio/lib

$export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/opt/gnuradio/lib/pkgconfig

$export PYTHONPATH=$PYTHONPATH:/opt/gnuradio/lib/python3.6/dist-packages

$cd /opt/gnuradio/bin

$ ./gnuradio-companion

<<< Welcome to GNU Radio Companion 3.9.0.0-git >>>

Block paths:

/opt/gnuradio/share/gnuradio/grc/blocks