Batch error when trying to start a bash shell from a Windows batch file

I had Linux working (many times). Now when I use bash in WSL I get this error:

<3>WSL (329) ERROR: CreateProcessParseCommon:763: Failed to translate H:\My Drive\Wayne Bridge\dealer\Dealer-Version-2-\Prod

I have been calling bash from a Windows batch file. The file is simple enough. It has two lines. The first changes the directory and the second calls bash.

I get the same error when I try to do this process manually.