In the .env file at line 1, the DATABASE_URL assignment is missing an '=' sign,
causing dotenv loaders to misinterpret it. Add an '=' between DATABASE_URL and
the URL string so it reads
DATABASE_URL=postgres://user:pass@localhost:5432/dbname to ensure proper parsing
and database connectivity.

In the .env file at line 2, remove any spaces around the equal sign in the
API_KEY assignment to ensure no leading or trailing spaces are included in the
value. Change "API_KEY = someapikey" to "API_KEY=someapikey" to prevent
unintended padding in the key or value.

In the .env file at lines 4 to 5, the environment variable names `123TOKEN` and
`API-KEY` are invalid because they start with a digit and contain a hyphen,
respectively. Rename these variables so they start with a letter or underscore
and only include uppercase letters, digits, or underscores. For example, change
`123TOKEN` to `TOKEN123` or `_TOKEN123` and `API-KEY` to `API_KEY`.

In the .env file at line 6, the PASSWORD value contains unescaped double quotes
which prematurely terminate the string. Fix this by either escaping the inner
double quotes with backslashes or by enclosing the entire value in single quotes
to ensure the password is correctly parsed.

In the .env file at lines 12 to 13, the multiline value is not supported as bare
newlines terminate the previous line and create unintended keys. To fix this,
replace the newline with an escaped newline character (\\n) or use a single line
with \\n literals to represent the multiline text properly within the value.

In the .env file at line 18, the environment variable declaration is missing an
equals sign delimiter between the key and value. Add an equals sign to separate
the key `MISSING_EQUALS_SIGN` from its value `somevalue` so the line reads
`MISSING_EQUALS_SIGN=somevalue` to fix the loader errors.

In the .env file at line 19, the value for BAD_QUOTES starts with a single quote
but does not have a closing quote, causing a parsing error. Fix this by adding
the missing closing single quote at the end of the value to properly terminate
the string.

In the .env file at line 20, the INVALID_UTF8 variable uses \x80-style byte
escapes which dotenv loaders do not interpret correctly, causing issues
downstream. Replace the \x80\x81\x82 sequence with a base64-encoded string or a
valid UTF-8 string representation to ensure proper parsing and usage by
consumers.