Error during slicing G-Code...

[FredM67]

Description of the bug

Toward the end of the slicing process, I receive this error:
!!!!! Failed to process the custom G-code template toolchange_gcode Parsing error at line 5: Not a variable name G1 E-{retract_length_toolchange[current_extruder]} X{wipe_tower_x} Y{wipe_tower_y} ^ !!!!! End of an error report for the custom G-code template toolchange_gcode

When doing the exact same task on the exact same STL with the exact same printer (Snapmaker Artisan) with V2.8.1, I don't get any error.

Project file & How to reproduce

Laser module.zip

Simply click on "Slice"... after a while, you get an error.
When doing the same with v2.8.1, slicing is successfull !

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

Version 2.9.0

Operating system

Windows 11 23H2 (OS Build 22635.4655)

Printer model

Snapmaker Artisan

[FredM67]

Duplicate to #13684

[Jan-Soustruznik]

Closed as duplicate of #13684