This has probably been asked before, but I can it find the definitive answer here (or on the Google group). I have a corrupted TW html file, but I still have a version online. Is it possible to recover the TW file from the online version even if it requires some manual editing of the downloaded html?
You can start with an empty.html and drag & drop import your broken HTML … If there is an $:/Import tiddler, you can click the “down arrows” in the table, to preview the content.
Import and see what happens. If you are lucky, the content will be there.
If the new wiki is also broken, try to start in safe mode. See link at the end.
The other first thing I’d do is:
Loading the broken wiki and hit F12, to open the browser dev console. The Console tab may show some logs. So there may be some hints what’s going on.
With the dev-console open I’d try. SHIFT - tab reload … to see what happens in the console.
Switching over to the Debugger tab. I’d activate - Pause on exceptions - in the Breakpoints setting. F5 - tab reload may stop somewhere, … This may be a hint