Not able to create the webage locally.

[teresa-m]

@YedilSerzhan: I tried to create the database locally following your description. However, I get the app.py script running, because of a db connection error.
I will list more information below:

my db_confing:

$ cat db_config.py
DB_CONFIG = {
    'USERNAME': 'teresa',
    'PASSWORD': 'hallo',
    'DB_NAME': 'dnapi'
}

my enviorment:

$ conda list
# packages in environment at /home/teresa/Software/miniconda3/envs/dnanalyzer:
#
# Name                    Version                   Build  Channel
_libgcc_mutex             0.1                        main  
_openmp_mutex             5.1                       1_gnu  
bzip2                     1.0.8                h7b6447c_0  
ca-certificates           2022.07.19           h06a4308_0  
certifi                   2022.9.14                pypi_0    pypi
click                     8.1.3                    pypi_0    pypi
flask                     2.2.2                    pypi_0    pypi
flask-login               0.6.2                    pypi_0    pypi
flask-marshmallow         0.14.0                   pypi_0    pypi
flask-sqlalchemy          2.5.1                    pypi_0    pypi
greenlet                  1.1.3                    pypi_0    pypi
itsdangerous              2.1.2                    pypi_0    pypi
jinja2                    3.1.2                    pypi_0    pypi
ld_impl_linux-64          2.38                 h1181459_1  
libffi                    3.3                  he6710b0_2  
libgcc-ng                 11.2.0               h1234567_1  
libgomp                   11.2.0               h1234567_1  
libstdcxx-ng              11.2.0               h1234567_1  
libuuid                   1.0.3                h7f8727e_2  
markupsafe                2.1.1                    pypi_0    pypi
marshmallow               3.18.0                   pypi_0    pypi
marshmallow-sqlalchemy    0.28.1                   pypi_0    pypi
ncurses                   6.3                  h5eee18b_3  
openssl                   1.1.1q               h7f8727e_0  
packaging                 21.3                     pypi_0    pypi
pillow                    9.2.0                    pypi_0    pypi
pip                       22.1.2                   pypi_0    pypi
psycopg2                  2.9.3                    pypi_0    pypi
pyparsing                 3.0.9                    pypi_0    pypi
python                    3.10.4               h12debd9_0  
pyyaml                    6.0                      pypi_0    pypi
readline                  8.1.2                h7f8727e_1  
setuptools                63.4.1                   pypi_0    pypi
six                       1.16.0                   pypi_0    pypi
sqlalchemy                1.4.41                   pypi_0    pypi
sqlite                    3.39.2               h5082296_0  
tk                        8.6.12               h1ccaba5_0  
tzdata                    2022c                h04d1e81_0  
werkzeug                  2.2.2                    pypi_0    pypi
wheel                     0.37.1             pyhd3eb1b0_0  
xz                        5.2.5                h7f8727e_1  
zlib                      1.2.12               h5eee18b_3 

the error:

$ python3 app.py
Traceback (most recent call last):
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3361, in _wrap_pool_connect
    return fn()
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 320, in connect
    return _ConnectionFairy._checkout(self)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 884, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 486, in checkout
    rec = pool._do_get()
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/impl.py", line 145, in _do_get
    with util.safe_reraise():
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__
    compat.raise_(
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 208, in raise_
    raise exception
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/impl.py", line 143, in _do_get
    return self._create_connection()
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 266, in _create_connection
    return _ConnectionRecord(self)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 381, in __init__
    self.__connect()
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 677, in __connect
    with util.safe_reraise():
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__
    compat.raise_(
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 208, in raise_
    raise exception
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 673, in __connect
    self.dbapi_connection = connection = pool._invoke_creator(self)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/create.py", line 578, in connect
    return dialect.connect(*cargs, **cparams)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/default.py", line 598, in connect
    return self.dbapi.connect(*cargs, **cparams)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/psycopg2/__init__.py", line 122, in connect
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
psycopg2.OperationalError: could not connect to server: Connection refused
	Is the server running on host "localhost" (127.0.0.1) and accepting
	TCP/IP connections on port 5432?


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

Traceback (most recent call last):
  File "/home/teresa/Dokumente/BeerDecoded/DNAnalyzer/app.py", line 50, in <module>
    db.create_all()
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/flask_sqlalchemy/__init__.py", line 1094, in create_all
    self._execute_for_all_tables(app, bind, 'create_all')
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/flask_sqlalchemy/__init__.py", line 1086, in _execute_for_all_tables
    op(bind=self.get_engine(app, bind), **extra)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/sql/schema.py", line 4917, in create_all
    bind._run_ddl_visitor(
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3227, in _run_ddl_visitor
    with self.begin() as conn:
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3143, in begin
    conn = self.connect(close_with_result=close_with_result)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3315, in connect
    return self._connection_cls(self, close_with_result=close_with_result)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 96, in __init__
    else engine.raw_connection()
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3394, in raw_connection
    return self._wrap_pool_connect(self.pool.connect, _connection)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3364, in _wrap_pool_connect
    Connection._handle_dbapi_exception_noconnection(
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 2198, in _handle_dbapi_exception_noconnection
    util.raise_(
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 208, in raise_
    raise exception
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3361, in _wrap_pool_connect
    return fn()
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 320, in connect
    return _ConnectionFairy._checkout(self)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 884, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 486, in checkout
    rec = pool._do_get()
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/impl.py", line 145, in _do_get
    with util.safe_reraise():
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__
    compat.raise_(
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 208, in raise_
    raise exception
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/impl.py", line 143, in _do_get
    return self._create_connection()
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 266, in _create_connection
    return _ConnectionRecord(self)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 381, in __init__
    self.__connect()
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 677, in __connect
    with util.safe_reraise():
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__
    compat.raise_(
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 208, in raise_
    raise exception
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 673, in __connect
    self.dbapi_connection = connection = pool._invoke_creator(self)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/create.py", line 578, in connect
    return dialect.connect(*cargs, **cparams)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/sqlalchemy/engine/default.py", line 598, in connect
    return self.dbapi.connect(*cargs, **cparams)
  File "/home/teresa/Software/miniconda3/envs/dnanalyzer/lib/python3.10/site-packages/psycopg2/__init__.py", line 122, in connect
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) could not connect to server: Connection refused
	Is the server running on host "localhost" (127.0.0.1) and accepting
	TCP/IP connections on port 5432?