unknown could not find expected while scanning a simple key at line 54 column 3 -e LANG=en_USUTF-8

The error message you encountered indicates a syntax error in the YAML file. It seems that there is a missing colon (':') at line 54, column 3.

To fix this issue, you need to locate line 54 in your YAML file and ensure that there is a colon after the key. For example, if the line looks like this:

key value

You should modify it to:

key: value

Make sure to check the syntax of your YAML file and ensure that all keys are followed by a colon.