upgrade to 18.04 now no Internet

After the upgrade I was able to communicate with my router but my browser can't find anything.
The wifi connection on 18.04 shows a question mark, but is connected.
All else seems to be ok.
After the upgrade and the reboot a fatal error was reported. I have the crash report file.
The file seems to indicate a problem with usr/gvfs/gvsfd-smb-browse.
To whom should I send the file?

Thanks in advance for any help you can give this noob.
-Frank-

8/17/2018 Solved my problem - added my router as DNS server. Still unknown why upgrade caused DNS failure.