Troubleshooting
Why Your Site Says Not Secure—and How to Fix It
Updated Sep 3, 2026
Fix
Diagnose the failure,
then fix it safely
Search errors, logs, and symptoms to get proven solutions. Follow step-by-step fixes, understand the cause, and verify with confidence.
Avoid pasting passwords, access tokens, private keys, or other secrets.
Start here — Get unstuck fast
I have an error messageSearch exact errors · 85My device is not workingHardware and driver issues · 5System is slow or laggingCPU, memory and I/O · 5Network / Wi-Fi issuesConnectivity problems · 6App / Service is crashingLogs and runtime failures · 2Kernel / Boot problemsBootloops, panic and init · 5
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How every Fix works
Identify the issue
Start with the exact error, log, or observable symptom.
Understand the cause
Connect evidence to known root causes before changing the system.
Apply the safest fix
Prefer reversible steps and clearly label destructive commands.
Verify and confirm
Run an explicit check and compare the expected result.
Existing library
Continue exploring
Yocto Embedded Linux
Read guide Fix Yocto “Installed but Not Shipped” QA Errors
This Yocto QA failure is a packaging mismatch: `do_install` placed an artifact under `${D}`, but no output package claimed it. Trace the reported path, package it intentionally or remove it, then inspect the generated package rather than hiding the warning.
Errors & Failures
Read guide Fix curl/curl.h Missing on Ubuntu C Builds
The `curl` command is not the libcurl development kit. Current Ubuntu builds normally need `libcurl4-openssl-dev`, which supplies headers and build metadata. Use pkg-config or CMake’s CURL target so transitive link flags and non-default installation paths remain correct.
Errors & Failures
Read guide Fix openssl/ssl.h Missing on Ubuntu Builds
The OpenSSL command and runtime library are not enough to compile C/C++ code. Ubuntu puts headers, unversioned linker files, and pkg-config metadata in `libssl-dev`. Install it for the correct architecture, then let pkg-config or CMake supply paths instead of hard-coding `/usr/include`.
Android Errors and Solutions
Read guide Fix “Invoke-customs” Android min-api 26 Build Error
This dex error usually means a module or dependency emits Java 8 invocation bytecode without compatible desugaring. First configure the module correctly; if the failing code calls MethodHandle.invoke, use the API-26-safe path instead of masking the problem.
PHP
Read guide Fix PHP count(): Value Must Be Countable
An empty array is valid input to count() and returns zero. This warning means the runtime value is null, scalar, or otherwise non-countable; find where the type contract broke, then fix or normalize it intentionally.
Django & REST Api
Read guide Fix “staticfiles Is Not a Registered Tag Library”
The old `{% load staticfiles %}` library was removed from Django. Replace it with `{% load static %}`, then verify the template engine and staticfiles app before diagnosing missing assets or production serving separately.
Django & REST Api
Read guide Fix MultipleObjectsReturned in Django and DRF
Django raises MultipleObjectsReturned when get() matches more than one row. The real fix depends on the domain: return a collection when duplicates are valid, or repair data and enforce uniqueness when exactly one row should exist.
NDK / Middleware / HAL
Read guide Fix “No Toolchains Found” Android NDK Error
The mips64el toolchain error usually means an old Android Gradle Plugin or native build expects files removed from newer NDKs. Diagnose the version boundary, modernize the build, and use a legacy NDK only as a controlled archival fallback.
Errors & Failures
Read guide Fix “buildOutput.apkData must not be null” Safely
The internal `buildOutput.apkData must not be null` exception belongs mainly to older Android Studio 3.5-era builds. A project-local clean often repaired stale APK metadata, but modern diagnosis should first identify the exact Gradle wrapper, Android Gradle Plugin, JDK, IDE, task, and plugin combination.
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