Gin can't serve wails template in GET request

[justinmoon]

Description

I was trying to have a GET request served by gin on v3 return a rendered templ template, but it was throwing this error: https://gist.github.com/justinmoon/9f12bc889967f494668507107336627d. The commit at the top of my post fixes it.

To Reproduce

have gin serve a GET request that renders templ template.

Expected behaviour

no big red error

Screenshots

No response

Attempted Fixes

I'm going to submit a PR right after this fixing it.

System Details

❯ wails3 doctor
 Wails (v3.0.0-dev)  Wails Doctor

# System

┌──────────────────────────────────────────────────┐
| Name          | MacOS                            |
| Version       | 15.3.2                           |
| ID            | 24D81                            |
| Branding      | Sequoia                          |
| Platform      | darwin                           |
| Architecture  | arm64                            |
| Apple Silicon | true                             |
| CPU           | Apple M2 Pro                     |
| CPU 1         | Apple M2 Pro                     |
| CPU 2         | Apple M2 Pro                     |
| GPU           | 19 cores, Metal Support: Metal 3 |
| Memory        | 16 GB                            |
└──────────────────────────────────────────────────┘

# Build Environment

┌─────────────────────────────────────────────────────────┐
| Wails CLI    | v3.0.0-dev                               |
| Go Version   | go1.24.1                                 |
| Revision     | 685d8101aa67e354a87ea6f0e7b92148582844cb |
| Modified     | false                                    |
| -buildmode   | exe                                      |
| -compiler    | gc                                       |
| CGO_CFLAGS   |                                          |
| CGO_CPPFLAGS |                                          |
| CGO_CXXFLAGS |                                          |
| CGO_ENABLED  | 1                                        |
| CGO_LDFLAGS  |                                          |
| GOARCH       | arm64                                    |
| GOARM64      | v8.0                                     |
| GOOS         | darwin                                   |
| vcs          | git                                      |
| vcs.modified | false                                    |
| vcs.revision | 685d8101aa67e354a87ea6f0e7b92148582844cb |
| vcs.time     | 2025-04-23T05:45:38Z                     |
└─────────────────────────────────────────────────────────┘

# Dependencies

┌────────────────────────────────────────────────────────────────────────┐
| Xcode cli tools | 2409                                                 |
| npm             | 10.9.2                                               |
| *NSIS           | Not Installed. Install with `brew install makensis`. |
|                                                                        |
└─────────────────────── * - Optional Dependency ────────────────────────┘

# Checking for issues

 SUCCESS  No issues found

# Diagnosis

 SUCCESS  Your system is ready for Wails development!

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Additional context

No response