jfa-go server crashes on restart after install wizard

[Austin-C-B]

Describe the bug

Immediately after finishing the setup wizard, once jfa-go restarts the server crashes and I am unable to access the local admin page.

To Reproduce

Seemingly just go through the setup wizard on Ubuntu 24.04.4 LTS until it makes jfa-go restart.

Logs

2026/02/20 14:58:50 Using internal storage
�[35mjfa-go version: �[97mgit�[0m (�[37m93937ec�[0m) TrayIcon
�[0m
Socket: /tmp/jfa-go.sock
[INFO] 14:58:50 �[97mCopied default configuration to "/home/USER/.config/jfa-go/config.ini"�[0m
[INFO] 14:58:50 �[97mInitializing router
�[0m
[INFO] 14:58:50 �[97mLoading routes
�[0m
[INFO] 14:58:50 �[97mLoading setup @ 0.0.0.0:8056�[0m
[INFO] 14:58:50 �[97mLoaded, visit 0.0.0.0:8056 to start.�[0m
�[2m[GIN] GET(/) => 200
�[0m�[2m[GIN] GET(/css/bundle.css) => 200
�[0m�[2m[GIN] GET(/banner.svg) => 200
�[0m�[2m[GIN] GET(/site.webmanifest) => 200
�[0m�[2m[GIN] GET(/js/setup.js) => 200
�[0m�[2m[GIN] GET(/css/remixicon.css) => 200
�[0m�[2m[GIN] GET(/css/remixicon.woff2?t=1590207869815) => 200
�[0m�[2m[GIN] GET(/lang/form) => 200
�[0m�[2m[GIN] GET(/lang/admin) => 200
�[0m�[2m[GIN] GET(/lang/email) => 200
�[0m�[2m[GIN] GET(/lang/pwr) => 200
�[0m�[2m[GIN] GET(/lang/setup) => 200
�[0m�[2m[GIN] GET(/favicon-32x32.png) => 200
�[0m�[2m[GIN] GET(/apple-touch-icon.png) => 200
�[0m�[2m[GIN] POST(/jellyfin/test) => 200
�[0m�[2m[GIN] GET(/apple-touch-icon.png) => 200
�[0m[INFO] 15:01:33 �[97mConfig modification requested
�[0m
[INFO] 15:01:33 �[97mRestarting...
�[0m
[ERROR] 15:01:33 main.go:625: �[31mFailure serving: http: Server closed�[0m

�[31m2026/02/20 15:01:33 [Recovery] 2026/02/20 - 15:01:33 panic recovered:
runtime error: index out of range [1] with length 1
/usr/local/go/src/runtime/panic.go:88 (0x438864)
/drone/src/email.go:167 (0xbcb1ce)
/drone/src/email.go:157 (0xbca9b8)
/drone/src/config.go:145 (0xbc3e85)
/drone/src/api.go:1544 (0xbb610e)
/go/pkg/mod/github.com/gin-gonic/gin@v1.6.3/context.go:161 (0x976c10)
/go/pkg/mod/github.com/gin-gonic/gin@v1.6.3/recovery.go:83 (0x976bf7)
/go/pkg/mod/github.com/gin-gonic/gin@v1.6.3/context.go:161 (0x975c93)
/go/pkg/mod/github.com/gin-gonic/gin@v1.6.3/logger.go:241 (0x975c52)
/go/pkg/mod/github.com/gin-gonic/gin@v1.6.3/context.go:161 (0x96cdcf)
/go/pkg/mod/github.com/gin-gonic/gin@v1.6.3/gin.go:409 (0x96cdb6)
/go/pkg/mod/github.com/gin-gonic/gin@v1.6.3/gin.go:367 (0x96c86c)
/usr/local/go/src/net/http/server.go:2887 (0x70e562)
/usr/local/go/src/net/http/server.go:1952 (0x70998c)
/usr/local/go/src/runtime/asm_amd64.s:1371 (0x475de0)
�[0m
�[2m[GIN] POST(/config) => 500
�[0m

Configuration

Note: I have not yet set up a reverse proxy for anything. I'm doin initial setup stuff for this server and haven't gotten to reverse proxy'ing anything.

Platform/Version

Ubuntu 24.04.4 LTS
jfa-go version: git (93937ec) TrayIcon

[hrfee]

Did you set a "From address" in the email settings? The error is in the NewMailgun function where it splits the from address in two by the "@" symbol.

[hrfee]

also, why are you on such an old version?