Problem running Apache Gump [vmgump]

There is a problem with run 'vmgump' (12082021_120001), location : http://gump-vm2.apache.org/
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The log ought be at:
   http://gump-vm2.apache.org/gump_log.txt
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The last (up to) 50 lines of the log are :
Failed to publish '/srv/gump/public/workspace/tomcat-tc9/output/build/lib/tomcat-i18n-ru.jar' to proxy
Traceback (most recent call last):
  File "/srv/gump/public/gump/python/gump/actor/mvnrepoproxy/proxycontrol.py", line 88, in processProject
    self.publish(groupId, output.getId(), fileName)
  File "/srv/gump/public/gump/python/gump/actor/mvnrepoproxy/proxycontrol.py", line 100, in publish
    urllib.request.urlopen(self.proxyURL + 'addartifact',
  File "/usr/lib/python3.8/urllib/request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.8/urllib/request.py", line 522, in open
    req = meth(req)
  File "/usr/lib/python3.8/urllib/request.py", line 1285, in do_request_
    raise TypeError(msg)
TypeError: POST data should be bytes, an iterable of bytes, or a file object. It cannot be of type str.
Failed to publish '/srv/gump/public/workspace/tomcat-tc9/output/build/lib/tomcat-i18n-zh-CN.jar' to proxy
Traceback (most recent call last):
  File "/srv/gump/public/gump/python/gump/actor/mvnrepoproxy/proxycontrol.py", line 88, in processProject
    self.publish(groupId, output.getId(), fileName)
  File "/srv/gump/public/gump/python/gump/actor/mvnrepoproxy/proxycontrol.py", line 100, in publish
    urllib.request.urlopen(self.proxyURL + 'addartifact',
  File "/usr/lib/python3.8/urllib/request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.8/urllib/request.py", line 522, in open
    req = meth(req)
  File "/usr/lib/python3.8/urllib/request.py", line 1285, in do_request_
    raise TypeError(msg)
TypeError: POST data should be bytes, an iterable of bytes, or a file object. It cannot be of type str.
Build Project: #[(130, 139)] : tomcat-tc9-test-nio :  [state:Unset]
Run Ant on Project: #[(130, 139)] : tomcat-tc9-test-nio
Failed to build project #[(130, 139)] : [tomcat-tc9-test-nio], state:Failed
Perform Update on #[(62, 62)] : tomcat-taglibs
Perform Git Checkout/Update on #[(62, 62)] : tomcat-taglibs
Build Project: #[(131, 139)] : taglibs-standard-spec :  [state:Unset]
Run Maven on Project: #[(131, 139)] : taglibs-standard-spec
Failed to publish '/srv/gump/public/workspace/tomcat-taglibs/spec/target/taglibs-standard-spec-2.0.0-SNAPSHOT.jar' to proxy
Traceback (most recent call last):
  File "/srv/gump/public/gump/python/gump/actor/mvnrepoproxy/proxycontrol.py", line 88, in processProject
    self.publish(groupId, output.getId(), fileName)
  File "/srv/gump/public/gump/python/gump/actor/mvnrepoproxy/proxycontrol.py", line 100, in publish
    urllib.request.urlopen(self.proxyURL + 'addartifact',
  File "/usr/lib/python3.8/urllib/request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.8/urllib/request.py", line 522, in open
    req = meth(req)
  File "/usr/lib/python3.8/urllib/request.py", line 1285, in do_request_
    raise TypeError(msg)
TypeError: POST data should be bytes, an iterable of bytes, or a file object. It cannot be of type str.
Build Project: #[(132, 139)] : tomcat-10.0.x-test-nio2 :  [state:Unset]
Run Ant on Project: #[(132, 139)] : tomcat-10.0.x-test-nio2
Killed
Process Exit Code : 137
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Gump Version: 2.0.2-alpha-0003