Webtop doesn't start when "US/*" timezones are set

[mrmarkuz]

The Webtop app doesn't start when the timezone is set to "US/*" and therefore tomcat shows a 404 error.
Within Webtop, there are no US/ timezones, only America/.

Steps to reproduce

• Install Webtop
• In the NS8 Webtop app settings, set the timezone to some "US/*" timezone like "US/Eastern"
• Browse to Webtop

Expected behavior

The browser should show the Webtop login page.

Actual behavior

A 404 error is shown from Tomcat:

Following line is in the Webtop log:

Sep 16 11:15:38 rl1 postgres[47602]: 2025-09-16 11:15:38.258 UTC [35] FATAL:  invalid value for parameter "TimeZone": "US/Eastern"
Sep 16 11:15:39 rl1 webapp[47850]: 2025-09-16 07:15:39 [ERROR] com.zaxxer.hikari.pool.HikariPool - com.sonicle.webtop.core.default - Exception during pool initialization.
Sep 16 11:15:39 rl1 webapp[47850]: org.postgresql.util.PSQLException: FATAL: invalid value for parameter "TimeZone": "US/Eastern"

Components

Webtop 1.5.0

See also

• https://community.nethserver.org/t/webtop-5-http-status-404-not-found/26330
• https://mattermost.nethesis.it/webtop/pl/c8tijqrmw3ffdb7ks3xf6336my

---

Thanks to Jeff Davis

[DavidePrincipi]

The issue probably arises after upgrade to PostgreSQL 17, which may reject the old format of timezone US/... and expects the IANA-format America/...

As quick workaround, just use the available America/... options, e.g. America/New_York

[DavidePrincipi]

In Testing 1.5.2-testing.2

Test case 1

• Check the bug is not reproducible with the Testing release because non-IANA timezones are no more accessible from the drop-down menu

Test case 2

Since the testing release bumps PostgreSQL 17.6 (minor) and Tomcat 9 (patch) releases

• Update an existing Webtop installation with the Testing version and check it's safe to upgrade.

[mrmarkuz]

Test case 1 verified

Test case 2 verified