CASUAL r1137-libusb-1 error

[DEBUG]Diagnostics OS:Linux Version:4.15.0-041500rc5-generic Architecture:amd64 Separator:/ | Java:Oracle Corporation Version:1.8.0_20 Website:http://java.oracle.com/ | WorkingDir: /home/gazza/Downloads/Untitled Folder/app CASUALDir:/tmp/CASUALgazza-2017-12-31-19.44.56/ | CASUAL is handling this system as:Linux 64 bit, x86_64 -- End Diag
[DEBUG]native search /usr/local/bin/heimdall:false
[DEBUG]native search /usr/bin/heimdall:true
[VERBOSE]Heimdall Device detected!
[VERBOSE]Starting: mode:Heimdall
Connected:true

[DEBUG]Beginning MandatoryThread counter.casual-dev.com
[VERBOSE]Heimdall Device detected!
[DEBUG]Attempting state change to 1 devices connected
[DEBUG]Device Connected
[DEBUG]@stateConnected
[DEBUG][TRANSLATION][English]@interactionPastebinError
[INTERACTION][TEXTINPUT] Title:Error Submission System.
Message:We will submit your log to the CASUAL-Automated Pastebin.  Developers can take a look at it to figure out what's going on.\\n\\nPlease enter your XDA-Developers username in the area below, then click 'Ok'.
press: Any String

[VERBOSE]Heimdall Device detected!
[VERBOSE]Heimdall Device detected!
[VERBOSE]Heimdall Device detected!
[VERBOSE]Heimdall Device detected!
[VERBOSE]Heimdall Device detected!
[VERBOSE]Heimdall Device detected!
[VERBOSE]Heimdall Device detected!
[DEBUG][TRANSLATION][English]@interactionPastebinError
[INTERACTION][TEXTINPUT] Title:Error Submission System.
Message:We will submit your log to the CASUAL-Automated Pastebin.  Developers can take a look at it to figure out what's going on.\\n\\nPlease enter your XDA-Developers username in the area below, then click 'Ok'.
press: Any String

[VERBOSE]Heimdall Device detected!
[VERBOSE]Heimdall Device detected!
[VERBOSE]Heimdall Device detected!
[VERBOSE]Heimdall Device detected!
[VERBOSE]Heimdall Device detected!
[DEBUG]Pastebin Login Successful