Cannot run state.apply with sproxy, returns "KeyError: '__opts__'"

[cyb0]

Describe the bug

[root@iad1-saltlab-master-01 ~]# salt-sproxy fra2-sw-10 state.apply juniper.common.snmpv3

returns a KeyError with the latest version of sproxy.

fra2-sw-10:
    The minion function caused an exception: Traceback (most recent call last):
      File "/usr/local/lib/python3.6/site-packages/salt_sproxy/_runners/proxy.py", line 660, in salt_call
        ret = sa_proxy.functions[salt_function](*args, **kwargs)
      File "/usr/lib/python3.6/site-packages/salt/loader.py", line 1241, in __call__
        return self.loader.run(run_func, *args, **kwargs)
      File "/usr/lib/python3.6/site-packages/salt/loader.py", line 2274, in run
        return self._last_context.run(self._run_as, _func_or_method, *args, **kwargs)
      File "/usr/lib/python3.6/site-packages/contextvars/__init__.py", line 38, in run
        return callable(*args, **kwargs)
      File "/usr/lib/python3.6/site-packages/salt/loader.py", line 2289, in _run_as
        return _func_or_method(*args, **kwargs)
      File "/usr/lib/python3.6/site-packages/salt/modules/state.py", line 792, in apply_
        return sls(mods, **kwargs)
      File "/usr/lib/python3.6/site-packages/salt/modules/state.py", line 1391, in sls
        ret = st_.state.call_high(high_, orchestration_jid)
      File "/usr/lib/python3.6/site-packages/salt/state.py", line 3269, in call_high
        ret = self.call_chunks(chunks)
      File "/usr/lib/python3.6/site-packages/salt/state.py", line 2495, in call_chunks
        running = self.call_chunk(low, running, chunks)
      File "/usr/lib/python3.6/site-packages/salt/state.py", line 2856, in call_chunk
        low = self._mod_aggregate(low, running, chunks)
      File "/usr/lib/python3.6/site-packages/salt/state.py", line 852, in _mod_aggregate
        agg_opt = self.functions["config.option"]("state_aggregate")
      File "/usr/lib/python3.6/site-packages/salt/loader.py", line 1241, in __call__
        return self.loader.run(run_func, *args, **kwargs)
      File "/usr/lib/python3.6/site-packages/salt/loader.py", line 2274, in run
        return self._last_context.run(self._run_as, _func_or_method, *args, **kwargs)
      File "/usr/lib/python3.6/site-packages/contextvars/__init__.py", line 38, in run
        return callable(*args, **kwargs)
      File "/usr/lib/python3.6/site-packages/salt/loader.py", line 2289, in _run_as
        return _func_or_method(*args, **kwargs)
      File "/usr/lib/python3.6/site-packages/salt/modules/config.py", line 208, in option
        if value in __opts__:
      File "/usr/lib/python3.6/site-packages/salt/loader_context.py", line 81, in __contains__
        return item in self.value()
      File "/usr/lib/python3.6/site-packages/salt/loader_context.py", line 72, in value
        return loader.pack[self.name]
    KeyError: '__opts__'
ERROR: Minions returned with non-zero exit code

Steps To Reproduce
/srv/pillar/top.sls:

base:
  '*':
    - linux.iad1-saltlab-master-01.sproxy
  fra2-sw-10:
    - juniper.common.snmpv3

/srv/pillar/linux/iad1-saltlab-master-01/sproxy.sls:

proxy:
  proxytype: napalm
  username: <deleted>
  host: {{ opts.id }}
  multiprocessing: False
  always_alive: False
  optional_args:
    key_file: <deleted>

/srv/salt/top.sls:

base:
  fra2-sw-10:
    - juniper.common.snmpv3

/srv/salt/juniper/common/snmpv3.sls:

configure_snmpv3:
  netconfig.managed:
    - template_name: salt://juniper/templates/snmpv3.j2
    - replace: False
    - debug: True
    - test: True

If needed I can paste the jinja and static pillar, but they're working fine as I'm able to apply the same if it's running on a salt-proxy instead.

For roster I'm using a file:
/etc/salt/master.d/01-sproxy.conf:

roster: file
roster_file: /etc/salt/sproxy-devices.yaml

/etc/salt/sproxy-devices.yaml:

fra2-sw-10:
  driver: junos
  host: <deleted>

Expected behavior
It should work. :)

Versions Report
Print the output from salt-sproxy -V inside the backticks below:

Salt Version:
           Salt: 3003.3
    Salt SProxy: 2021.6.1
 
Dependency Versions:
        Ansible: Not Installed
           cffi: 1.14.5
       dateutil: 2.6.1
      docker-py: Not Installed
          gitdb: Not Installed
      gitpython: Not Installed
         Jinja2: 2.11.3
     junos-eznc: 2.5.4
       jxmlease: 1.0.3
        libgit2: Not Installed
       M2Crypto: 0.35.2
           Mako: Not Installed
   msgpack-pure: Not Installed
 msgpack-python: 0.6.2
         NAPALM: 3.2.0
       ncclient: 0.6.10
        Netmiko: 3.3.3
       paramiko: 2.7.2
      pycparser: 2.20
       pycrypto: Not Installed
   pycryptodome: Not Installed
         pyeapi: 0.8.4
         pygit2: Not Installed
       PyNetBox: Not Installed
          PyNSO: Not Installed
         Python: 3.6.8 (default, Mar 19 2021, 05:13:41)
   python-gnupg: Not Installed
         PyYAML: 5.4.1
          PyZMQ: 19.0.0
            scp: 0.13.3
          smmap: Not Installed
        textfsm: 1.1.0
        timelib: Not Installed
        Tornado: 4.5.3
            ZMQ: 4.3.4
 
System Versions:
           dist: centos 8 
         locale: UTF-8
        machine: x86_64
        release: 4.18.0-240.15.1.el8_3.x86_64
         system: Linux
        version: CentOS Linux 8

Additional context
I can run commands via the sproxy to the remote system.
For example:
salt-sproxy -l debug fra2-sw-10 net.cli "show version"
is working properly so it's not an issue with the connectivity.

[cyb0]

I just figured out that if I run:
# salt-sproxy fra2-sw-10 state.apply juniper.common.snmpv3 test=False
it runs as it should and applies the config.
Any suggestions how to fix that?

Thank you!