[Solved] error: no connection to turboprint daemon

[pluton8_13]

Hello
on Archlinux kernel 6.5.5 I can't use TurboPrint anymore:
the service does not start and displays this error message in the print monitor: "ERROR: no connection to turboprint daemon"
I'm using TurboPrint 2.49-1 dated 28nov 2019 with the Studio XL license.
I've tried to install the current version of TurboPrint but it won't accept my license key (TurboPrint 2.55-1 for Linux)
What is the solution to get the TurboPrint daemon up and running again?
(EPSON SCP800 + EPSON ET-3750)

Thank you for your help.

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