prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  too long iban generated for pl-PL locale
  * Faker version: 9.8.2
  * OS: MacOs 12.0.1
  
  IBANs generated for pl_PL locales are 30 characters long. This is too many. Valid PL IBAN should have 28 characters (including country code).
  
  ### Steps to reproduce
  Generate a Polish IBAN with:
  ```
  from faker import Faker
    fake=Faker('pl-PL')
    print(fake.iban())
  ```
  Copy paste generated string into IBAN Validator at https://www.ibancalculator.com/
  ### Expected behavior
  
  IBAN should have the correct length and checksum
  
  ### Actual behavior
  
  There is an error message that IBAN have too many characters:
  "This IBAN cannot be correct because of its length. A Polish IBAN always contains exactly 28 digits and letters ("PL", a 2-digit checksum, and the 24-digit national account number, whose first 8 digits determine the bank and branch). The IBAN you entered is 30 characters long."
  
  too long iban generated for pl-PL locale
  * Faker version: 9.8.2
  * OS: MacOs 12.0.1
  
  IBANs generated for pl_PL locales are 30 characters long. This is too many. Valid PL IBAN should have 28 characters (including country code).
  
  ### Steps to reproduce
  Generate a Polish IBAN with:
  ```
  from faker import Faker
    fake=Faker('pl-PL')
    print(fake.iban())
  ```
  Copy paste generated string into IBAN Validator at https://www.ibancalculator.com/
  ### Expected behavior
  
  IBAN should have the correct length and checksum
  
  ### Actual behavior
  
  There is an error message that IBAN have too many characters:
  "This IBAN cannot be correct because of its length. A Polish IBAN always contains exactly 28 digits and letters ("PL", a 2-digit checksum, and the 24-digit national account number, whose first 8 digits determine the bank and branch). The IBAN you entered is 30 characters long."
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `faker/providers/bank/pl_PL/__init__.py`
  Content:
  ```
  1 from .. import Provider as BankProvider
  2 
  3 
  4 class Provider(BankProvider):
  5     """Implement bank provider for ``pl_PL`` locale."""
  6 
  7     bban_format = "#" * 26
  8     country_code = "PL"
  9
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/faker/providers/bank/pl_PL/__init__.py b/faker/providers/bank/pl_PL/__init__.py
  --- a/faker/providers/bank/pl_PL/__init__.py
  +++ b/faker/providers/bank/pl_PL/__init__.py
  @@ -4,5 +4,5 @@
   class Provider(BankProvider):
       """Implement bank provider for ``pl_PL`` locale."""
   
  -    bban_format = "#" * 26
  +    bban_format = "#" * 24
       country_code = "PL"
  
verification_info: {"golden_diff": "diff --git a/faker/providers/bank/pl_PL/__init__.py b/faker/providers/bank/pl_PL/__init__.py\n--- a/faker/providers/bank/pl_PL/__init__.py\n+++ b/faker/providers/bank/pl_PL/__init__.py\n@@ -4,5 +4,5 @@\n class Provider(BankProvider):\n     \"\"\"Implement bank provider for ``pl_PL`` locale.\"\"\"\n \n-    bban_format = \"#\" * 26\n+    bban_format = \"#\" * 24\n     country_code = \"PL\"\n", "issue": "too long iban generated for pl-PL locale\n* Faker version: 9.8.2\r\n* OS: MacOs 12.0.1\r\n\r\nIBANs generated for pl_PL locales are 30 characters long. This is too many. Valid PL IBAN should have 28 characters (including country code).\r\n\r\n### Steps to reproduce\r\nGenerate a Polish IBAN with:\r\n```\r\nfrom faker import Faker\r\n  fake=Faker('pl-PL')\r\n  print(fake.iban())\r\n```\r\nCopy paste generated string into IBAN Validator at https://www.ibancalculator.com/\r\n### Expected behavior\r\n\r\nIBAN should have the correct length and checksum\r\n\r\n### Actual behavior\r\n\r\nThere is an error message that IBAN have too many characters:\r\n\"This IBAN cannot be correct because of its length. A Polish IBAN always contains exactly 28 digits and letters (\"PL\", a 2-digit checksum, and the 24-digit national account number, whose first 8 digits determine the bank and branch). The IBAN you entered is 30 characters long.\"\r\n\ntoo long iban generated for pl-PL locale\n* Faker version: 9.8.2\r\n* OS: MacOs 12.0.1\r\n\r\nIBANs generated for pl_PL locales are 30 characters long. This is too many. Valid PL IBAN should have 28 characters (including country code).\r\n\r\n### Steps to reproduce\r\nGenerate a Polish IBAN with:\r\n```\r\nfrom faker import Faker\r\n  fake=Faker('pl-PL')\r\n  print(fake.iban())\r\n```\r\nCopy paste generated string into IBAN Validator at https://www.ibancalculator.com/\r\n### Expected behavior\r\n\r\nIBAN should have the correct length and checksum\r\n\r\n### Actual behavior\r\n\r\nThere is an error message that IBAN have too many characters:\r\n\"This IBAN cannot be correct because of its length. A Polish IBAN always contains exactly 28 digits and letters (\"PL\", a 2-digit checksum, and the 24-digit national account number, whose first 8 digits determine the bank and branch). The IBAN you entered is 30 characters long.\"\r\n\n", "before_files": [{"content": "from .. import Provider as BankProvider\n\n\nclass Provider(BankProvider):\n    \"\"\"Implement bank provider for ``pl_PL`` locale.\"\"\"\n\n    bban_format = \"#\" * 26\n    country_code = \"PL\"\n", "path": "faker/providers/bank/pl_PL/__init__.py"}], "after_files": [{"content": "from .. import Provider as BankProvider\n\n\nclass Provider(BankProvider):\n    \"\"\"Implement bank provider for ``pl_PL`` locale.\"\"\"\n\n    bban_format = \"#\" * 24\n    country_code = \"PL\"\n", "path": "faker/providers/bank/pl_PL/__init__.py"}]}