Traceback (most recent call last):
File "/home/tempesta/tempesta-test/http2_general/test_h2_headers.py", line 288, in test
CurlTestBase.run_test(self)
File "/home/tempesta/tempesta-test/http2_general/test_h2_headers.py", line 156, in run_test
msg=("Curl return code is not 0 (%d)." %
TypeError: %d format: a number is required, not NoneType
Now http2_general tests fail with: