This morning my application stopped working, although before that everything worked fine for several months.throws this error

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

Traceback (most recent call last):

File "manage.py", line 22, in

main()

File "manage.py", line 18, in main

executefromcommand_line(sys.argv)

File "/opt/venv/lib/python3.8/site-packages/django/core/management/init.py", line 442, in executefromcommand_line

utility.execute()

File "/opt/venv/lib/python3.8/site-packages/django/core/management/init.py", line 436, in execute

self.fetchcommand(subcommand).runfrom_argv(self.argv)

File "/opt/venv/lib/python3.8/site-packages/django/core/management/base.py", line 412, in runfromargv

self.execute(*args, **cmd_options)

File "/opt/venv/lib/python3.8/site-packages/django/core/management/base.py", line 458, in execute

output = self.handle(*args, **options)

File "/opt/venv/lib/python3.8/site-packages/django/core/management/base.py", line 106, in wrapper

res = handle_func(*args, **kwargs)

File "/opt/venv/lib/python3.8/site-packages/django/core/management/commands/migrate.py", line 117, in handle

executor = MigrationExecutor(connection, self.migrationprogresscallback)

File "/opt/venv/lib/python3.8/site-packages/django/db/migrations/executor.py", line 18, in init

self.loader = MigrationLoader(self.connection)

File "/opt/venv/lib/python3.8/site-packages/django/db/migrations/loader.py", line 58, in init

self.build_graph()

File "/opt/venv/lib/python3.8/site-packages/django/db/migrations/loader.py", line 235, in build_graph

self.appliedmigrations = recorder.appliedmigrations()

File "/opt/venv/lib/python3.8/site-packages/django/db/migrations/recorder.py", line 81, in applied_migrations

if self.has_table():

File "/opt/venv/lib/python3.8/site-packages/django/db/migrations/recorder.py", line 57, in has_table

with self.connection.cursor() as cursor:

File "/opt/venv/lib/python3.8/site-packages/django/utils/asyncio.py", line 26, in inner

return func(*args, **kwargs)

File "/opt/venv/lib/python3.8/site-packages/django/db/backends/base/base.py", line 330, in cursor

return self._cursor()

File "/opt/venv/lib/python3.8/site-packages/django/db/backends/base/base.py", line 306, in _cursor

self.ensure_connection()

File "/opt/venv/lib/python3.8/site-packages/django/utils/asyncio.py", line 26, in inner

return func(*args, **kwargs)

File "/opt/venv/lib/python3.8/site-packages/django/db/backends/base/base.py", line 289, in ensure_connection

self.connect()

File "/opt/venv/lib/python3.8/site-packages/django/db/utils.py", line 91, in exit

raise djexcvalue.withtraceback(traceback) from excvalue

File "/opt/venv/lib/python3.8/site-packages/django/db/backends/base/base.py", line 289, in ensure_connection

self.connect()

File "/opt/venv/lib/python3.8/site-packages/django/utils/asyncio.py", line 26, in inner

return func(*args, **kwargs)

File "/opt/venv/lib/python3.8/site-packages/django/db/backends/base/base.py", line 270, in connect

self.connection = self.getnewconnection(conn_params)

File "/opt/venv/lib/python3.8/site-packages/django/utils/asyncio.py", line 26, in inner

return func(*args, **kwargs)

File "/opt/venv/lib/python3.8/site-packages/django/db/backends/postgresql/base.py", line 275, in getnewconnection

connection = self.Database.connect(**conn_params)

File "/opt/venv/lib/python3.8/site-packages/psycopg2/init.py", line 122, in connect

conn = connect(dsn, connectionfactory=connection_factory, **kwasync)

django.db.utils.OperationalError: connection to server at "containers-us-west-104.railway.app" (34.127.51.25), port 7098 failed: Connection refused

Is the server running on that host and accepting TCP/IP connections?