Try to recover from errors that are happening in subprocesses

jedi/__init__.py

@@ -42,3 +42,4 @@ from jedi.api import Script, Interpreter, set_debug_function, \
     preload_module, names
 from jedi import settings
 from jedi.api.environment import find_virtualenvs, find_python_environments
+from jedi.api.exceptions import InternalError