[tor-bugs] #23943 [Applications/Tor Browser Sandbox]: Tor Browser crazy Sandbox tells me "Can't connect to bridge; PT_MISSING" even when obfs4proxy is installed in my system

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#23943: Tor Browser crazy Sandbox tells me "Can't connect to bridge; PT_MISSING"
even when obfs4proxy is installed in my system
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     Reporter:  cypherpunks                       |      Owner:  yawning
         Type:  defect                            |     Status:  assigned
     Priority:  Medium                            |  Milestone:
    Component:  Applications/Tor Browser Sandbox  |    Version:
     Severity:  Normal                            |   Keywords:
Actual Points:                                    |  Parent ID:
       Points:                                    |   Reviewer:
      Sponsor:                                    |
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 Tor Browser crazy Sandbox tells me "Can't connect to bridge; PT_MISSING"
 even when obfs4proxy is installed in my system. Here's some more logs

 {{{
 [notice] Starting with guard context "bridges"
 [warn] The communication stream of managed proxy
 '/home/amnesia/tor/bin/PluggableTransports/obfs4proxy' is 'closed'. Most
 probably the managed proxy stopped running. This might be a bug of the
 managed proxy, a bug of Tor, or a misconfiguration. Please enable logging
 on your managed proxy and check the logs for errors.
 [notice] Bootstrapped 5%: Connecting to directory server
 [warn] We were supposed to connect to bridge '<manually-redacted
 >:<manually-redacted>' using pluggable transport 'obfs4', but we can't
 find a pluggable transport proxy supporting 'obfs4'. This can happen if
 you haven't provided a ClientTransportPlugin line, or if your pluggable
 transport proxy stopped running.
 [warn] Problem bootstrapping. Stuck at 5%: Connecting to directory server.
 (Can't connect to bridge; PT_MISSING; count 1; recommendation warn; host
 <manually-redacted> at <manually-redacted>:<manually-redacted>)
 }}}

 System: Ubuntu 17.10 - AMD64

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23943>
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