Update error message for invalid locale

[VinuVicho]

GreenCity PR

Issue Link 📋

#6562

Summary Of Changes 🔥

Updated ExeptionHandler to handle situations, when symbols is entered into language field

How to test 📋

Repeat actions in folowing requests: #6562

PR Checklist Forms

(to be filled out by PR submitter)

• Code is up-to-date with the dev branch.
• You've successfully built and run the tests locally.
• There are new or updated unit tests validating the change.
• JIRA/ Github Issue number & title in PR title (ISSUE-6561 6562)
• This template filled (above this section).
• Sonar's report does not contain bugs, vulnerabilities, security issues, code smells or duplication
• NEED_REVIEW and READY_FOR_REVIEW labels are added.
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[sonarqubecloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud