Error on Launch - pyRevit DevTools

I installed the extended version of pyRevit with the DevTools, and while launching Revit 2021, I got the following error:
If you have any suggestions, let me know. Thank you in advance!



Startup script execution test.



C:\pyRevit\testingClone\extensions\pyRevitDevTools.extension\lib 
C:\pyRevit\testingClone\extensions\pyRevitDevTools.extension 
C:\pyRevit\testingClone\pyrevitlib 
C:\pyRevit\testingClone\site-packages 
C:\pyRevit\testingClone\bin 
C:\pyRevit\testingClone\pyrevitlib\pyrevit\loader\addin 
C:\pyRevit\testingClone\bin\engines\2711 
C:\pyRevit\testingClone\bin\engines\IPY2711PR 
C:\Users\varunan.varathan\AppData\Roaming\pyRevit 
C:\Users\varunan.varathan\AppData\Roaming\pyRevit\2021 
C:\Users\varunan.varathan\AppData\Roaming\pyRevit\Extensions 
C:\pyRevit\testingClone\bin 
C:\pyRevit\testingClone\bin 
C:\pyRevit\testingClone\bin



lib/ import works in startup.py




ERROR [pyrevit.routes.server.router] Route pattern is invalid: /posts/<int:uiapp>