PlatformIO error with MS 0.28.01

When adding ModSensors 0.28.01 to a new project, I get the error: ValueError: Invalid simple block ‘^0.28.01’. I’ve included the full error text in the attached file. I’m getting this on multiple PCs, and other versions of MS do not give me this error.

I suspect this is a PlatformIO problem, but I’m posting here to see if others have seen it or can reproduce?

To reproduce:
Create new PIO project
Add ModSensors library to the project from the PIO Registry: from PIO Home, click Libraries, search for ModularSensors and add it.
An error pane pops up with the error described. I’ll attach a screencap of the error pane too.

I can also generate the error by creating a new project and adding this line to platformio.ini and saving it:
lib_deps = envirodiy/EnviroDIY_ModularSensors@^0.28.01

I do *not* get the error if I instead specify ModularSensors using any of the following:
lib_deps = envirodiy/EnviroDIY_ModularSensors@^0.28
lib_deps = envirodiy/EnviroDIY_ModularSensors@0.27.8
lib_deps = envirodiy/EnviroDIY_ModularSensors

My environment:
Windows 10 Pro 64-bit
VSCode 1.54.1
PIO Core 5.1.0
PIO Home 3.3.3
PIO IDE 2.3.0

(In the attached error message, there is also an error that I believe is unrelated: ‘Obsolete PIO Core, please remeove multiple PIO Cores from a system’. It began when I installed the -dev version of PIO Core and then uninstalled it after it didn’t solve the ‘ValueError’.)

-Matt