mproved error handling and formatting of estimatedFees.

[vvvalentinnn1995]

• Added try-catch block to handle errors.
• Implemented validation of input arguments to ensure correct data types.
  • Enhanced logging for better debugging.
  • Formatted estimated fees in a more readable format (converted to ETH). :wq Улучшил обработку ошибок и форматирование estimatedFees