Bitbake timeout to connect in test,

...
GalculatorTest class: SDK doesn't contain Meson
GalculatorTest class: SDK don't support gtk+3
No perl package in the SDK
No python package in the SDK
No python3 package in the SDK
SDK testing environment: ppc7400-poky-linux
Traceback (most recent call last):
  File "/home/pokybuild/yocto-worker/qemuppc/build/meta/lib/oeqa/sdkext/cases/devtool.py", line 75, in test_extend_autotools_recipe_creation
    self._run('devtool add %s %s' % (recipe, req) )
  File "/home/pokybuild/yocto-worker/qemuppc/build/meta/lib/oeqa/sdkext/case.py", line 22, in _run
    return subprocess.check_output(". %s > /dev/null;"\
  File "/usr/lib/python3.8/subprocess.py", line 411, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/usr/lib/python3.8/subprocess.py", line 512, in run
    raise CalledProcessError(retcode, process.args,
oeqa.utils.subprocesstweak.OETestCalledProcessError: Command '. /home/pokybuild/yocto-worker/qemuppc/build/build/tmp/work/qemuppc-poky-linux/core-image-sato/1.0-r0/testsdkext/environment-setup-ppc7400-poky-linux > /dev/null; devtool add librdfa https://github.com/rdfa/librdfa;' returned non-zero exit status 1
Standard Output: NOTE: Starting bitbake server...
NOTE: No reply from server in 30s
Timeout while waiting for a reply from the bitbake server (60s)

...

From,

https://autobuilder.yoctoproject.org/typhoon/#/builders/63/builds/3141/steps/16/logs/stdio