Some couchdb Error in openwhisk

## Environment details:

* Linux version: 5.4; Ubuntu16.04 server

## To install Openwhisk, I do these steps:

1. cd tools/ubuntu-setup && ./all.sh
2. ./gradlew distDocker # in openwhisk home folder

## Provide the expected results and outputs:
I use "couchdb start" command to start couchdb, but I met some errors.
```
{"init terminating in do_boot",{{badmatch,{error,{bad_return,{{couch_app,start,[normal,["/etc/couchdb/default.ini","/etc/couchdb/local.ini"]]},{'EXIT',{{badmatch,{error,{error,eacces}}},[{couch_server_sup,start_server,1,[{file,"couch_server_sup.erl"},{line,56}]},{application_master,start_it_old,4,[{file,"application_master.erl"},{line,273}]}]}}}}}},[{couch,start,0,[{file,"couch.erl"},{line,18}]},{init,start_em,1,[]},{init,do_boot,3,[]}]}}
init terminating in do_boot ({{badmatch,{error,{bad_return,{_}}}},[{couch,start,0,[{_},{_}]},{init,start_em,1,[]},{init,do_boot,3,[]}]})

Crash dump is being written to: erl_crash.dump...done
```
I cannot find the "erl_crash.dump" file, and I don't know why the error appear.

How can I solve the problem?