The old error message is still visible after a successful start of analysis

The old error message is still visible after a successful start of analysis

## Current Behavior
The error message is not cleared out after a successful launch of analysis

## Steps to Reproduce
1. Open decoder http://localhost:3000/decoder/textdecoder
2. Enter a short text "hello world" into the "Input Job posting" text area
3. Push the button "Analyze job posting"
4. The error message "Please enter a job description of more than 100 characters" will pop up
5. Enter a long text (longer than 100 characters) into the "Input Job posting" text area
## Actual Behavior
The button "Analyze job posting" is disabled. This is expected. ✅
The error message "Please enter a job description of more than 100 characters" is still visible ❌

## Expected Behavior
The error message "Please enter a job description of more than 100 characters" is hidden right after the successful run of analysis.