Use official tutorial configuration --windows 10
C:\Users\r\Desktop>C:/ParaView5.4\bin\pvpython.exe C:/ParaView5.4\bin\Lib\site-packages\vtk\web\launcher.py C:/ParaView5.4\launcher.config Unhandled Error Traceback (most recent call last): File "C:/ParaView5.4\bin\Lib\site-packages\vtk\web\launcher.py", line 688, in start startWebServer(args, config) File "C:/ParaView5.4\bin\Lib\site-packages\vtk\web\launcher.py", line 631, in startWebServer reactor.run() File "C:\ParaView5.4\bin\lib\site-packages\twisted\internet\base.py", line 1243, in run self.mainLoop() File "C:\ParaView5.4\bin\lib\site-packages\twisted\internet\base.py", line 1252, in mainLoop self.runUntilCurrent() --- --- File "C:\ParaView5.4\bin\lib\site-packages\twisted\internet\base.py", line 878, in runUntilCurrent call.func(*call.args, **call.kw) File "C:/ParaView5.4\bin\Lib\site-packages\vtk\web\launcher.py", line 491, in _waitForReady not self.process_manager.isReady(session, count + 1): File "C:/ParaView5.4\bin\Lib\site-packages\vtk\web\launcher.py", line 375, in isReady if not self.isRunning(id) and count < 60: File "C:/ParaView5.4\bin\Lib\site-packages\vtk\web\launcher.py", line 363, in isRunning return self.processes[id].poll() is None exceptions.KeyError: 'ee2694b0-66f4-11e9-ac8f-d07e35bc865c'