compile error


Hello everyone´╝î

When we update EDK2 version from 201903 to 202011, we meet a compile error, the error message like below. we roll back the EDK2 version and find the error starts from 201908.
Our env is
Linux job-for-start-dev-docker-210-mxzlp-5vjvk-n9nt4 4.15.0-45-generic #86-Ubuntu SMP X86_64
python 2.7.17
Does anyone know how to solve this compile error.

Building ... /home/phisik3/jenkins_home/workspace/C_56173/work_code/bios/output/edk2/ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf [AARCH64]
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python2.7/", line 801, in __bootstrap_inner
File "/home/phisik3/jenkins_home/workspace/C_56173/work_code/bios/output/edk2/BaseTools/Source/Python/AutoGen/", line 85, in run
log_message = self.log_q.get()
File "/usr/lib/python2.7/multiprocessing/", line 117, in get
res = self._recv()
UnpicklingError: invalid load key, ''.

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