Error while installing on ubuntu 20.04.2

thanks for the reply. Im using BASH. I have command - help command returns

help command
command: command [-pVv] command [arg …]
Execute a simple command or display information about commands.

Runs COMMAND with ARGS suppressing  shell function lookup, or display
information about the specified COMMANDs.  Can be used to invoke commands
on disk when a function with the same name exists.

Options:
  -p    use a default value for PATH that is guaranteed to find all of
        the standard utilities
  -v    print a description of COMMAND similar to the `type' builtin
  -V    print a more verbose description of each COMMAND

Exit Status:
Returns exit status of COMMAND, or failure if COMMAND is not found.

any other ideas would be appreciated.

i still get the error

Download complete.
Inflating binaries (password may be required).
main: line 210: command: -,: invalid option
command: usage: command [-pVv] command [arg …]
There was some problem while installing Dgraph. Please share the output of this script with us on http://discuss.hypermode.com so that we can resolve the issue for you.