Cura 4.5.0 will not save Gcode when z offset is set due to float error

[StanislavJochman]

Application version
4.5.0
Platform
Manjaro 19.0.2 Kyria
Kernel: x86_64 Linux 4.19.113-1-MANJARO
Printer
Does not matter

Reproduction steps

1. Installed z offset
2. Set z offset to 0.1mm
3. Sliced Gcode - everything looks fine but can not save gcode
4. Error in terminal see screenshot

Screenshot(s)
(Image showing the problem, perhaps before/after images.)

Logs
2020-04-06 13:45:35,281 - ERROR - [MainThread] UM.Qt.Bindings.OutputDeviceManagerProxy._writeToDevice [144]: adjusted_z = round(float(result.group(2)) + z_offset_value, 5)
2020-04-06 13:45:35,281 - ERROR - [MainThread] UM.Qt.Bindings.OutputDeviceManagerProxy._writeToDevice [144]: ValueError: could not convert string to float: ''
2020-04-06 13:45:39,218 - DEBUG - [MainThread] cura.AutoSave._onTimeout [60]: Autosaving preferences, instances and profiles

Additional information
If z offset is set to 0 it works fine but when it is set to 0.1 and I use 0.8 mm nozzle it throws this error

[nallath]

Since this is an issue caused by the z_offset plugin, you might want to report it there instead. I don't think there is much we can do from this side.

[fieldOfView]

Please open an issue over at https://github.com/fieldOfView/Cura-ZOffsetPlugin/issues and I'll get cracking.

[StanislavJochman]

It is open there so I think I can close it here right?