update-codegen.sh errors out on linux

[surajssd]

When the script is run I get following errors:

$ hack/update-codegen.sh 
###### Generating Traffic Split Client ######
hack/update-codegen.sh: line 14: cd: too many arguments

I edited the file to run with -x and here is the output:

$ hack/update-codegen.sh 
+ ROOT_PACKAGE=github.com/deislabs/smi-sdk-go
+ CUSTOM_RESOURCE_VERSION=v1alpha1
+ echo '###### Generating Traffic Split Client ######'
###### Generating Traffic Split Client ######
+ generate_client split
+++ dirname hack/update-codegen.sh
++ cd hack
++ pwd
+ SCRIPT_ROOT='/home/surajssd/go/src/github.com/deislabs/smi-sdk-go/hack
/home/surajssd/go/src/github.com/deislabs/smi-sdk-go/hack'
++ cd /home/surajssd/go/src/github.com/deislabs/smi-sdk-go/hack /home/surajssd/go/src/github.com/deislabs/smi-sdk-go/hack/..
hack/update-codegen.sh: line 16: cd: too many arguments
+ ROOT_DIR=

[surajssd]

If this matters:

$ cat /etc/redhat-release 
Fedora release 28 (Twenty Eight)

I am guessing that this line puts the dir name twice in the variable

SCRIPT_ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"