I have node-red V2.2.0 installed on an Azure debian 10 VM accessing a local MySQL database, using latest Chrome to access the editor and dashboard ui.
Its been working fine for days as I've been developing the application. Today I had some sort of strange blip and when I refreshed the editor I just got a blank screen, however the dashboard UI still works.
I've stopped and restarted node-red - same result; blank node-red but dashboard UI works.
I've stopped and restarted the VM itself, same results.
checking the node-red log file gives something interesting
4 Feb 12:25:13 - [info] Started flows 4 Feb 12:25:13 - [error] [mysql:90954e215c0fcf35] Database not connected 4 Feb 12:25:13 - [error] [mysql:1443a7ab59b87dc9] Database not connected
but . . . what does it mean ?? the dashboard UI works fine, and access data from mysql ?? and in any case I can't see the flows in order to change anything. But maybe the mysql error is not relevant to the real problem here.
If I use the chrome tools to look at that page there is an error message on there that may or may not be relevant :-
*Access to CSS stylesheet at 'http://obfuscated:1880/vendor/jquery/css/base/jquery-ui.min.css?v=2.2.0' from origin 'http://obfuscated:1880' has been blocked by CORS policy: The request client is not a secure context and the resource is in more-private address space private
as an aside, the VM also runs a docker container with node-red which accesses the same mysql database - this also works fine from a dashboard UI perspective, but the editor behavior is different - it does load and does show its flows but loses connection within a few seconds and can't remake it. If I refrech the browser same thing happens - initial load then loses connection.
This docker container isn't causing the main node-red problem - I've restarted the VM without the container running and get the same behaviour on the main editor screen - ie: blank
I'm a bit lost really
any ideas appreciated . . .