Question about S3

[ga1008ne]

i'm learning by doing an experiment about s3.configure
on the "Actions" i'm set 2 buckets at the same time
for example

"Read:testing",
"Write:testing",
"Read:testing2",
"Write:testing2" 

first connection is connected i can ls/upload/download

after a while, more like an hour or so
when im trying to reconnect, im getting :
on aws-cli
An error occurred (InvalidAccessKeyId) when calling the ListObjectsV2 operation: The access key ID you provided does not exist in our records.
on S3 Browser

Edit :
first s3 is only running using

"Read:testing",
"Write:testing"

then im trying to add another buckets
by adding

"Read:testing2",
"Write:testing2" 

using weed shell

s3.configure -name -actions -buckets -apply

Update :
the InvalidAccessKeyId is because im rebooting the server using
reboot

then when im using
weed shell > s3.configure -apply
it's working again

is this normal?