Marlin autobuild question. Library or other error

I am trying to update firware and cannot get the example build to work. I did the generic build and worked but once I tried the autobuild this error keepsmefrombeing successful. I am a total newb and have no idea how to fix

PS C:\Marlin-2.0.x> platformio run -e STM32F103RC_btt
Processing STM32F103RC_btt (platform: ststm32@~6.1; board: genericSTM32F103RC; framework: arduino)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------Platform Manager: Installing ststm32 @ ~6.1
Downloading  [####################################]  100%
Unpacking  [####################################]  100%
Platform Manager: ststm32 @ 6.1.1 has been installed!
The platform 'ststm32@~6.1' has been successfully installed!
The rest of the packages will be installed later depending on your build environment.
Tool Manager: Installing framework-arduinoststm32-maple @ ~2.10000.0
Downloading  [####################################]  100%
Unpacking  [####################################]  100%
Tool Manager: framework-arduinoststm32-maple @ 2.10000.200103 has been installed!
Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/ststm32/genericSTM32F103RC.html
PLATFORM: ST STM32 (6.1.1) > STM32F103RC (48k RAM. 256k Flash)
HARDWARE: STM32F103RCT6 72MHz, 48KB RAM, 256KB Flash
DEBUG: Current (blackmagic) External (blackmagic, jlink, stlink)
PACKAGES: 
 - framework-arduinoststm32-maple 2.10000.200103 (1.0.0)
 - tool-stm32duino 1.0.2
 - toolchain-gccarmnoneeabi 1.70201.0 (7.2.1)
Converting Marlin.ino
LDF: Library Dependency Finder -> http://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Library Manager: Installing SoftwareSerialM
Library Manager: SoftwareSerialM @ 1.0.0 has been installed!
Library Manager: Installing TMCStepper @ ~0.7.1
Library Manager: TMCStepper @ 0.7.1 has been installed!
Library Manager: Installing U8glib-HAL @ ~0.4.1
Library Manager: Warning! More than one package has been found by U8glib-HAL @ ~0.4.1 requirements:
 - marlinfirmware/U8glib-HAL @ 0.4.3
 - thinkyhead/U8glib-HAL @ 0.4.3
Library Manager: Please specify detailed REQUIREMENTS using package owner and version (showed above) to avoid name conflicts
Library Manager: U8glib-HAL @ 0.4.3 has been installed!
Found 31 compatible libraries
Scanning dependencies...
Dependency Graph
|-- <SoftwareSerialM> 1.0.0
|-- <TMCStepper> 0.7.1
|   |-- <SoftwareSerialM> 1.0.0
|-- <U8glib-HAL> 0.4.3
|   |-- <Wire> 1.0
|-- <STM32ADC> 1.0
|-- <EEPROM>
|-- <USBComposite for STM32F1> 0.91
|-- <Wire> 1.0
|-- <FreeRTOS701>
|-- <Servo(STM32F1)> 1.1.2
Building in release mode
scons: *** [C:\users\admin\.platformio\packages\framework-arduinoststm32-maple@2.10000.200103\STM32F1\variants\generic_stm32f103r\board.cpp] C:\Marlin-2.0.x\.pio\build\STM32F103RC_btt\.sconsign37.dblite: No such file or directory
================================================================== [FAILED] Took 70.74 seconds ==================================================================
Environment      Status    Duration
STM32F103RC_btt  FAILED    00:01:10.740
============================================================= 1 failed, 0 succeeded in 00:01:10.740 =============================================================PS C:\Marlin-2.0.x> echo "done" >C:\Users\admin\AppData\Local\Temp\ipc

Seems like there are some left-over build artifacts from another build (from possible a different machine). Please try and remove the folder C:\Marlin-2.0.x\.pio\ and retry building.

Did that and then hit clean and rebuilt and success. Thanks so much! I know these newbie issue make you roll your eyes but they dohelp us out so much. Really appreciate the reply!