Fixing mega-sync "Failed to sync folder: Invalid argument" on Ubuntu Containers

When mega-sync fails with the following message: Failed to sync folder: Invalid argument. Unable to retrieve the ID of current device the problem is often not the sync path itself. In my case, the real issue was that the Ubuntu environment deployed inside Docker did not have a valid machine ID. Why This Happens MEGA relies on the current device ID when creating or managing sync relationships. On some minimal Ubuntu container images, /etc/machine-id can be missing or empty. When that happens, mega-sync cannot identify the current device correctly and returns the misleading Invalid argument error. ...

March 28, 2026 · 1 min · 174 words · Mr.W

AI Venn Diagram

A simple diagram showing how terms in the AI ​​field relate to each other Source and idea comes from: IBM

December 31, 2024 · 1 min · 20 words · Mr.W

SpringBoot JDBC Reverse Analysis

This is some of my thinking about the Spring framework’s JDBC from my reverse engineering course. The location model image shows the abstract classes, implementation classes, interfaces, and methods that are directly or indirectly involved when executing the query method. The workflow image depicts the detailed function call process after initiating the JDBC query method. Due to space and time limitations, other branches resulting from polymorphism are not shown; only the chain produced by importing SQL of string type is displayed here. ...

July 13, 2024 · 1 min · 82 words · Mr.W

Hugo Warning [found no layout file for ..]

Warning message: WARN found no layout file for "html" for kind "home": You should create a template file which matches Hugo Layouts Lookup Rules for this combination. WARN found no layout file for "html" for kind "taxonomy": You should create a template file which matches Hugo Layouts Lookup Rules for this combination. WARN found no layout file for "html" for kind "section": You should create a template file which matches Hugo Layouts Lookup Rules for this combination. WARN found no layout file for "html" for kind "page": You should create a template file which matches Hugo Layouts Lookup Rules for this combination. WARN found no layout file for "html" for layout "archives" for kind "page": You should create a template file which matches Hugo Layouts Lookup Rules for this combination. WARN found no layout file for "html" for layout "search" for kind "page": You should create a template file which matches Hugo Layouts Lookup Rules for this combination. WARN found no layout file for "html" for kind "term": You should create a template file which matches Hugo Layouts Lookup Rules for this combination. WARN found no layout file for "json" for kind "home": You should create a template file which matches Hugo Layouts Lookup Rules for this combination. This will happen when you reclone repo with git submodule from remote branch and the submodule not get downloaded as well. In other words, Submodules may not get cloned automatically. ...

July 1, 2024 · 2 min · 246 words · Mr.W

AWS S3 Storage Class

Bucket Bucket Bucket Standard Classes S3 Standard - General Purpose 99.99% avaliability Used for frequent accessed data Low latency and high throughput Usage: Big data analytics, mobile & gaming applications, content distribution… Standard - Infrequent Access For data that is less frequently accessed, but requires rapud acess when needed Lower cost than S3 standard Intelligent Tiering Moves objects automatically between Access Tiers based on usage Usage: Unknown or changing access ...

April 8, 2024 · 1 min · 179 words · Mr.W