do_rootfs: Error executing a python function in exec_python_func() autogenerated:
 The stack trace of python calls that resulted in this exception/failure was:
 File: 'exec_python_func() autogenerated', lineno: 2, function: <module>
      0001:
  *** 0002:write_image_test_data(d)
      0003:
 File: '/mnt/home/topic_latest/openembedded-core/meta/classes/rootfs-postcommands.bbclass', lineno: 323, function: write_image_test_data
      0319:    link_name = d.getVar('IMAGE_LINK_NAME')
      0320:    testdata_name = os.path.join(deploy_dir, "%s.testdata.json" % d.getVar('IMAGE_NAME'))
      0321:
      0322:    searchString = "%s/"%(d.getVar("TOPDIR")).replace("//","/")
  *** 0323:    export2json(d, testdata_name, searchString=searchString, replaceString="")
      0324:
      0325:    if os.path.exists(testdata_name):
      0326:        testdata_link = os.path.join(deploy_dir, "%s.testdata.json" % link_name)
      0327:        if os.path.lexists(testdata_link):
 File: '/mnt/home/topic_latest/openembedded-core/meta/lib/oe/data.py', lineno: 46, function: export2json
      0042:            data2export[key] = ''
      0043:        except AttributeError:
      0044:            pass
      0045:
  *** 0046:    with open(json_file, "w") as f:
      0047:        json.dump(data2export, f, skipkeys=True, indent=4, sort_keys=True)
 Exception: FileNotFoundError: [Errno 2] No such file or directory: 'IMX8MQ_topic/yocto_20190813063206.testdata.json'