Serial port /dev/ttyUSB0 closed unexpectedly

Today I have update my NR on my pi3B+ from 0.20.7 to 1.0.3.
At the same time I have update some nodes among which the serial port node from version unknown to 0.10.0.
Since that moment my comport is giving an error in the debug window serial port /dev/ttyUSB0 closed unexpectedly
I removed the node and reinstalled it, but still not working.
Any suggestion what could be the problem or can I install an older version of the serial port node?

Opening the port on the command line with minicom -b 115200 -o -D /dev/ttyUSB0 will show me the data from my smart meter, so it doesn't look like a hw or os problem

Couple of things I would check:
1 - USB connector is firm when you plug it in.
2 - Power supply.

Although if you can open it from a terminal, it may be something else.
But, as I have often found, don't discount the obvious. They sometimes bite you hard if you ignore them long enough.

Installed the previous version of serialport 0.8.3 with sudo npm install -g --unsafe-perm node-red-node-serialport@0.8.3 and it looks that everything works again.
I will open a issue on github to report the problem.

Good to hear.