Debugging with lldb-9 fails to start

>(lldb) script sys.path.insert(1, '/home/my_home/opt/qtcreator-4.11.0-rc1/share/qtcreator/debugger/')
>(lldb) script from lldbbridge import *
>(lldb) script theDumper.loadDumpers({"token":1})
>(lldb) script theDumper.executeDebuggerCommand({"command":"settings append target.source-map /home/qt/work/qt /home/my_home/devel/qt/5.12","token":2})
eERROR: Lldb stderr: error: python failed attempting to evaluate 'sys.path.insert(1, '/home/my_home/opt/qtcreator-4.11.0-rc1/share/qtcreator/debugger/')'
eerror: python failed attempting to evaluate 'from lldbbridge import *'
eerror: python failed attempting to evaluate 'theDumper.loadDumpers({"token":1})'
eerror: python failed attempting to evaluate 'theDumper.executeDebuggerCommand({"command":"settings append target.source-map /home/qt/work/qt /home/my_home/devel/qt/5.12","token":2})'


(lldb) script theDumper.setupInferior({"attachpid":0,"breakonmain":0,"environment":["444255535f53455353494f4e5f4255535f414444524553533d756e69783a706174683d2f72756e2f757365722f313030302f6275732c677569643d3035393734616633613965653534313331333166663964303564653533383865","444255535f535441525445525f414444524553533d756e69783a706174683d2f72756e2f757365722f313030302f6275732c677569643d3035393734616633613965653534313331333166663964303564653533383865","444255535f535441525445525f4255535f545950453d73657373696f6e","4445534b544f505f53455353494f4e3d676e6f6d65","444953504c41593d3a30","47444d53455353494f4e3d676e6f6d65","47444d5f4c414e473d656e5f43412e75746638","47494f5f4c41554e434845445f4445534b544f505f46494c455f5049443d3331393730","474e4f4d455f4445534b544f505f53455353494f4e5f49443d746869732d69732d64657072656361746564","47544b5f4d4f44554c45533d6761696c3a61746b2d627269646765","484f4d453d2f686f6d652f726f757373696e6d","494e564f434154494f4e5f49443d3437323763613932363763383432333739373433363839613637643835643737","4a4f55524e414c5f53545245414d3d393a3433313830","4c414e473d656e5f43412e75746638","4c414e47554147453d656e5f43413a656e","4c4f474e414d453d726f757373696e6d","4d414e414745525049443d31373434","4f4c445057443d2f686f6d652f726f757373696e6d","504154483d2f7573722f6c6f63616c2f62696e3a2f7573722f62696e3a2f62696e3a2f7573722f67616d6573","5057443d2f686f6d652f726f757373696e6d","51544449523d2f686f6d652f726f757373696e6d2f646576656c2f71742f352e31322f717462617365","51545f4143434553534942494c4954593d31","51545f494d5f4d4f44554c453d69627573","53455353494f4e5f4d414e414745523d6c6f63616c2f6d62656465736b3a402f746d702f2e4943452d756e69782f393239352c756e69782f6d62656465736b3a2f746d702f2e4943452d756e69782f39323935","5348454c4c3d2f7573722f62696e2f7a7368","53484c564c3d30","5353485f415554485f534f434b3d2f72756e2f757365722f313030302f6b657972696e672f737368","555345523d726f757373696e6d","555345524e414d453d726f757373696e6d","5741594c414e445f444953504c41593d7761796c616e642d30","5844475f43555252454e545f4445534b544f503d474e4f4d45","5844475f4d454e555f5052454649583d676e6f6d652d","5844475f52554e54494d455f4449523d2f72756e2f757365722f31303030","5844475f534541543d7365617430","5844475f53455353494f4e5f434c4153533d75736572","5844475f53455353494f4e5f4445534b544f503d676e6f6d65","5844475f53455353494f4e5f49443d35","5844475f53455353494f4e5f545950453d7761796c616e64","5844475f56544e523d32","584d4f444946494552533d40696d3d69627573","5f3d2f7573722f62696e2f676e6f6d652d73657373696f6e"],"executable":"...","nativemixed":0,"platform":"","processargs":"","remotechannel":"","startmode":1,"sysroot":"","token":3,"useterminal":0,"workingdirectory":"..."})
eERROR: Lldb stderr: error: python failed attempting to evaluate 'theDumper.setupInferior({"attachpid":0,"breakonmain":0,"environment":["444255535f53455353494f4e5f4255535f414444524553533d756e69783a706174683d2f72756e2f757365722f313030302f6275732c677569643d3035393734616633613965653534313331333166663964303564653533383865","444255535f535441525445525f414444524553533d756e69783a706174683d2f72756e2f757365722f313030302f6275732c677569643d3035393734616633613965653534313331333166663964303564653533383865","444255535f535441525445525f4255535f545950453d73657373696f6e","4445534b544f505f53455353494f4e3d676e6f6d65","444953504c41593d3a30","47444d53455353494f4e3d676e6f6d65","47444d5f4c414e473d656e5f43412e75746638","47494f5f4c41554e434845445f4445534b544f505f46494c455f5049443d3331393730","474e4f4d455f4445534b544f505f53455353494f4e5f49443d746869732d69732d64657072656361746564","47544b5f4d4f44554c45533d6761696c3a61746b2d627269646765","484f4d453d2f686f6d652f726f757373696e6d","494e564f434154494f4e5f49443d3437323763613932363763383432333739373433363839613637643835643737","4a4f55524e414c5f53545245414d3d393a3433313830","4c414e473d656e5f43412e75746638","4c414e47554147453d656e5f43413a656e","4c4f474e414d453d726f757373696e6d","4d414e414745525049443d31373434","4f4c445057443d2f686f6d652f726f757373696e6d","504154483d2f7573722f6c6f63616c2f62696e3a2f7573722f62696e3a2f62696e3a2f7573722f67616d6573","5057443d2f686f6d652f726f757373696e6d","51544449523d2f686f6d652f726f757373696e6d2f646576656c2f71742f352e31322f717462617365","51545f4143434553534942494c4954593d31","51545f494d5f4d4f44554c453d69627573","53455353494f4e5f4d414e414745523d6c6f63616c2f6d62656465736b3a402f746d702f2e4943452d756e69782f393239352c756e69782f6d62656465736b3a2f746d702f2e4943452d756e69782f39323935","5348454c4c3d2f7573722f62696e2f7a7368","53484c564c3d30","5353485f415554485f534f434b3d2f72756e2f757365722f313030302f6b657972696e672f737368","555345523d726f757373696e6d","555345524e414d453d726f757373696e6d","5741594c414e445f444953504c41593d7761796c616e642d30","5844475f43555252454e545f4445534b544f503d474e4f4d45","5844475f4d454e555f5052454649583d676e6f6d652d","5844475f52554e54494d455f4449523d2f72756e2f757365722f31303030","5844475f534541543d7365617430","5844475f53455353494f4e5f434c4153533d75736572","5844475f53455353494f4e5f4445534b544f503d676e6f6d65","5844475f53455353494f4e5f49443d35","5844475f53455353494f4e5f545950453d7761796c616e64","5844475f56544e523d32","584d4f444946494552533d40696d3d69627573","5f3d2f7573722f62696e2f676e6f6d652d73657373696f6e"],"executable":"...","nativemixed":0,"platform":"","processargs":"","remotechannel":"","startmode":1,"sysroot":"","token":3,"useterminal":0,"workingdirectory":"..."})'