Dears, thanks in advance for your time and help

suddenly i start facing some issues with my Odoo and when i trace the issue i only get the following error over odoo.log

2022-06-08 12:38:24,597 1162 INFO MyDATAbase werkzeug: 103.195.184.54 - - [08/Jun/2022 12:38:24] "POST /longpolling/poll HTTP/1.1" 200 - 1 0.000 0.005
2022-06-08 12:38:26,534 1162 ERROR MyDATAbase odoo.http: Exception during JSON request handling.
Traceback (most recent call last):
  File "/opt/odoo/odoo14/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/opt/odoo/odoo14/odoo/http.py", line 685, in dispatch
    result = self._call_function(**self.params)
  File "/opt/odoo/odoo14/odoo/http.py", line 361, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/opt/odoo/odoo14/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/opt/odoo/odoo14/odoo/http.py", line 349, in checked_call
    result = self.endpoint(*a, **kw)
  File "/opt/odoo/odoo14/odoo/http.py", line 914, in __call__
    return self.method(*args, **kw)
  File "/opt/odoo/odoo14/odoo/http.py", line 533, in response_wrap
    response = f(*args, **kw)
  File "/opt/odoo/odoo14/odoo/addons/bus/controllers/main.py", line 35, in poll
    raise Exception("bus.Bus unavailable")
xception

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/opt/odoo/odoo14/odoo/http.py", line 641, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/opt/odoo/odoo14/odoo/http.py", line 317, in _handle_exception
    raise exception.with_traceback(None) from new_cause
Exception: bus.Bus unavailable

i can see it when anyone try to download pdf file its download as corrupted but when i try to download it from inside the server as localhost is download fine.

and some reports over dynamic_financial_report give me disconnect and reconnect info message.

Please advice, best regards