Marlin 2.0.3 error compiling

Okay this is my first rodeo with firmware for printers. I have used the Arduino Uno for projects.
When I compile to verify I keep getting this error:

fork/exec C:\Users\timot\AppData\Local\Arduino15\packages\arduino\tools\avr-gcc\5.4.0-atmel3.6.1-arduino2/bin/avr-gcc.exe: The filename or extension is too long.
Error compiling for board Sanguino.

I spent like the last 4 hours googling and watching youtube videos but can not find how to correct this issue.

Trying to upgrade an Ender 3 with the new silent board and figured might as well upgrade firmware too.

Does anyone know a fix for this?

Thanks

This is because of an Arduino limitation on the maximum command line length for linking. There are several options you cad take to try to fix this:

• Move your Marlin folder to the root of your hard drive - i.e. C:\Marlin (or even C:\M)
• Delete the HAL folders (under src/HAL) for any boards you aren't using
• Switch to PlatformIO for compiling Marlin (as described in Installing Marlin (PlatformIO)

The latter is probably your best option - not only should it solve the problem you are seeing, but many people have found that PlatformIO generates more efficient code that might allow you to enable some extra features even on the very limited Creality boards.

Thanks,
I was just trying PlatformIO with VsCode but it errored as well

Marlin\src\HAL\HAL_AVR\../../inc/../pins/sanguino/pins_SANGUINOLOLU_11.h:56:4: error: #error "Oops! Select 'Sanguino' in 'Tools > Boards' and 'ATmega644P' or 'ATmega1284P' in 'Tools > Processor.'"

I can't find where to set them in PlatformIO

I will try your other suggestions as well.
Thanks again

Edit the platformio.ini file and change the line near the beginning that says "default_envs" so it reads like:

default_envs = melzi

============================= 1 succeeded in 00:02:51.694 =============================

That looks like it did the trick, you my friend are awesome. I have been going at it for 7 hours....dropped loads of F-bombs LOL
Thank you
Thank You
Thank You

Well I stand corrected, It failed again

same error message? seems unlikely.