[solved] Missing library download for Marlin 1.1 / Atmega2560

Hi,

I am a total newbie to platformIO.
Tried to compile marlin, but there is a library download offline. is this marlin related or PlatformIO?

thanks

~/Home/Build/Marlin-1.1.9.1$ platformio run -e megaatmega2560
Warning! `env_default` configuration option in section [platformio] is deprecated and will be removed in the next release! Please use `default_envs` instead
Processing megaatmega2560 (platform: atmelavr; framework: arduino; board: megaatmega2560)
------------------------------------------------------------------------------------------------------------------------------------------------------------
Tool Manager: Installing platformio/framework-arduino-avr @ ~5.2.0
Downloading  [####################################]  100%
Unpacking  [####################################]  100%
Tool Manager: framework-arduino-avr@5.2.0 has been installed!
Library Manager: Installing https://github.com/MarlinFirmware/U8glib-HAL/archive/dev.zip
Downloading...
Unpacking  [####################################]  100%
Library Manager: U8glib-HAL@0.4.0 has been installed!
Library Manager: Installing https://github.com/teemuatlut/TMC2208Stepper/archive/v0.1.1.zip
...
Library Manager: Installing https://github.com/lincomatic/LiquidTWI2/archive/30aa480.zip
...
Library Manager: Installing https://github.com/ameyer/Arduino-L6470/archive/master.zip
...
Library Manager: Installing https://github.com/trinamic/TMC26XStepper/archive/c1921b4.zip
PackageException: Got the unrecognized status code '404' when downloaded https://github.com/trinamic/TMC26XStepper/archive/c1921b4.zip

Well, it was marlin related.
there was already a bugfix in nighly.