dependency packages error?

[SurferZergy]

Hi, I was running through you example QAOA.ipynb, and ran into error: module 'pyquil.api' has no attribute 'QVMConnection' so I downgraded pyquil to 2.1.1 as you mentioned. And then got the stack trace below. Was wondering if there is a specific python version and forest SDK version i need to run? (I also had issues getting forest to install, so i just ran the docker (https://docs.rigetti.com/qcs/getting-started/forest-docker-image)) using this command: docker run --rm -it rigetti/forest

`--------------------------------------------------------------------------- Exception Traceback (most recent call last) in 1 import numpy as np ----> 2 from grove.pyqaoa.maxcut_qaoa import maxcut_qaoa 3 import pyquil.api as api 4 qvm_connection = api.QVMConnection()

~/miniconda3/lib/python3.9/site-packages/grove/pyqaoa/maxcut_qaoa.py in 19 """ 20 import numpy as np ---> 21 import pyquil.api as api 22 from pyquil.paulis import PauliTerm, PauliSum 23 import networkx as nx

~/miniconda3/lib/python3.9/site-packages/pyquil/init.py in 1 version = "2.2.1" 2 ----> 3 from pyquil.quil import Program 4 from pyquil.api import list_quantum_computers, get_qc

~/miniconda3/lib/python3.9/site-packages/pyquil/quil.py in 29 from typing import List, Dict 30 ---> 31 from pyquil._parser.PyQuilListener import run_parser 32 from pyquil.noise import _check_kraus_ops, _create_kraus_pragmas, pauli_kraus_map 33 from pyquil.parameters import format_parameter

~/miniconda3/lib/python3.9/site-packages/pyquil/_parser/PyQuilListener.py in 43 RawInstr, Qubit, Pragma, Declare, AbstractInstruction, 44 ClassicalTrue, ClassicalFalse, ClassicalOr, ResetQubit) ---> 45 from .gen3.QuilLexer import QuilLexer 46 from .gen3.QuilListener import QuilListener 47 from .gen3.QuilParser import QuilParser

~/miniconda3/lib/python3.9/site-packages/pyquil/_parser/gen3/QuilLexer.py in 222 223 --> 224 class QuilLexer(Lexer): 225 226 atn = ATNDeserializer().deserialize(serializedATN())

~/miniconda3/lib/python3.9/site-packages/pyquil/_parser/gen3/QuilLexer.py in QuilLexer() 224 class QuilLexer(Lexer): 225 --> 226 atn = ATNDeserializer().deserialize(serializedATN()) 227 228 decisionsToDFA = [ DFA(ds, i) for i, ds in enumerate(atn.decisionToState) ]

~/miniconda3/lib/python3.9/site-packages/antlr4/atn/ATNDeserializer.py in deserialize(self, data) 26 self.data = data 27 self.pos = 0 ---> 28 self.checkVersion() 29 atn = self.readATN() 30 self.readStates(atn)

~/miniconda3/lib/python3.9/site-packages/antlr4/atn/ATNDeserializer.py in checkVersion(self) 48 version = self.readInt() 49 if version != SERIALIZED_VERSION: ---> 50 raise Exception("Could not deserialize ATN with version " + str(version) + " (expected " + str(SERIALIZED_VERSION) + ").") 51 52 def readATN(self):

Exception: Could not deserialize ATN with version (expected 4).`