Wireshark wont open with mininet [fix]

This is a problem that I have encountered, I have been running wireshark and mininet together with no issues then I go back a day or two later and wireshark wont boot up. This can be very frustrating especially since everything was working and now its not. Don't panic as there is a work around to this it seems that mininet can get a little bit muddled sometimes and you just have to clear its mind so to speak.

In order to do this launch your terminal window and we are going to enter the following command

sudo mn -c

This command kills any controllers that may be running in the background.
Next we are going to launch mininet

sudo mn

Inside the mininet command line issue the following command

dump

Now exit mininet by typing

exit

into the mininet command prompt. Now lets try and launch wireshark.

sudo wireshark &

If we have been successful wireshark will launch and all is good again. I have made a little video that you can watch below to guide you through this process. Best of luck.