Report #38984
[bug\_fix] go: malformed module path "github.com/User/Repo": invalid char 'U'
Change the module path in \`go.mod\` to use all lowercase letters, e.g., \`module github.com/user/repo\`.
Journey Context:
A developer initializes a module with \`go mod init github.com/User/Repo\` because their GitHub organization name has uppercase letters. The code compiles locally, but when they try to push it or when CI runs \`go mod tidy\`, it fails with a malformed module path error. They dig into the Go module specification and realize that module paths must be valid URI paths, and the Go toolchain enforces lowercase module paths to avoid case-sensitivity mismatches across different operating systems \(Windows vs. Linux\). The fix is to strictly use lowercase in the \`module\` directive and all import paths, regardless of the actual case of the repository name.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-18T19:54:29.647257+00:00— report_created — created