Completion error when passing range to the :DB

[hauleth]

Buffer content:

select count(*) from patients;

Command:

:%DB post<tab>

Error:

I get this message:

|| Loading plugins
|| Loaded plugins
|| Error detected while processing function
/Users/hauleth/.local/share/nvim/pack/minpac/start/vim-dadbod/autoload/db.vim|344| db#command_complete[9]
/Users/hauleth/.local/share/nvim/pack/minpac/start/vim-dadbod/autoload/db.vim|129| db#connect[6]
/Users/hauleth/.local/share/nvim/pack/minpac/start/vim-dadbod/autoload/db/adapter.vim|47| db#adapter#call[1]
/Users/hauleth/.local/share/nvim/pack/minpac/start/vim-dadbod/autoload/db/adapter.vim|34| <SNR>111_fnname[1]
/Users/hauleth/.local/share/nvim/pack/minpac/start/vim-dadbod/autoload/db/adapter.vim|15| <SNR>111_prefix[4]
|| E605: Exception not caught: DB: no URL
|| Error detected while processing function
/Users/hauleth/.local/share/nvim/pack/minpac/start/vim-dadbod/autoload/db.vim|344| db#command_complete[9]
|| E171: Missing :endif

Environment:

This happens in both Vim 8:

VIM - Vi IMproved 8.0 (2016 Sep 12, compiled Nov 29 2017 18:37:46)
Included patches: 1-503, 505-680, 682-1283
Compiled by root@apple.com
Normal version without GUI.  Features included (+) or not (-):
+acl             +file_in_path    -mouse_sgr       +tag_old_static
-arabic          +find_in_path    -mouse_sysmouse  -tag_any_white
+autocmd         +float           -mouse_urxvt     -tcl
-balloon_eval    +folding         +mouse_xterm     -termguicolors
-browse          -footer          +multi_byte      -terminal
+builtin_terms   +fork()          +multi_lang      +terminfo
+byte_offset     -gettext         -mzscheme        +termresponse
+channel         -hangul_input    +netbeans_intg   +textobjects
+cindent         +iconv           +num64           +timers
-clientserver    +insert_expand   +packages        +title
-clipboard       +job             +path_extra      -toolbar
+cmdline_compl   +jumplist        -perl            +user_commands
+cmdline_hist    -keymap          +persistent_undo +vertsplit
+cmdline_info    +lambda          +postscript      +virtualedit
+comments        -langmap         +printer         +visual
-conceal         +libcall         -profile         +visualextra
+cryptv          +linebreak       +python/dyn      +viminfo
+cscope          +lispindent      -python3         +vreplace
+cursorbind      +listcmds        +quickfix        +wildignore
+cursorshape     +localmap        +reltime         +wildmenu
+dialog_con      -lua             -rightleft       +windows
+diff            +menu            +ruby/dyn        +writebackup
+digraphs        +mksession       +scrollbind      -X11
-dnd             +modify_fname    +signs           -xfontset
-ebcdic          +mouse           +smartindent     -xim
-emacs_tags      -mouseshape      +startuptime     -xpm
+eval            -mouse_dec       +statusline      -xsmp
+ex_extra        -mouse_gpm       -sun_workshop    -xterm_clipboard
+extra_search    -mouse_jsbterm   +syntax          -xterm_save
-farsi           -mouse_netterm   +tag_binary      
   system vimrc file: "$VIM/vimrc"
     user vimrc file: "$HOME/.vimrc"
 2nd user vimrc file: "~/.vim/vimrc"
      user exrc file: "$HOME/.exrc"
       defaults file: "$VIMRUNTIME/defaults.vim"
  fall-back for $VIM: "/usr/share/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H   -DMACOS_X_UNIX  -g -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1      
Linking: gcc   -L/usr/local/lib -o vim        -lm -lncurses  -liconv -framework Cocoa           

And NeoVim:

NVIM v0.3.1
Build type: Release
LuaJIT 2.0.5
Compilation: /usr/local/Homebrew/Library/Homebrew/shims/mac/super/clang -Wconversion -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1 -DNDEBUG -DMIN_LOG_LEVEL=3 -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wimplicit-fallthrough -Wvla -fstack-protector-strong -fdiagnostics-color=auto -DINCLUDE_GENERATED_DECLARATIONS -D_GNU_SOURCE -DNVIM_MSGPACK_HAS_FLOAT32 -DNVIM_UNIBI_HAS_VAR_FROM -I/tmp/neovim-20180721-48604-1emkq4l/neovim-0.3.1/build/config -I/tmp/neovim-20180721-48604-1emkq4l/neovim-0.3.1/src -I/usr/local/include -I/usr/local/opt/gettext/include -I/usr/include -I/tmp/neovim-20180721-48604-1emkq4l/neovim-0.3.1/build/src/nvim/auto -I/tmp/neovim-20180721-48604-1emkq4l/neovim-0.3.1/build/include
Skompilowany przez brew@HighSierra.local

Features: +acl +iconv +jemalloc +tui 
See ":help feature-compile"

       vimrc systemu: "$VIM/sysinit.vim"
   odwet dla $VIM-a: "/usr/local/Cellar/neovim/0.3.1/share/nvim"

Run :checkhealth for more info

I have defined :Start as this if this could be a problem:

command! -nargs=* Start <mods> split term://<args> <bar> startinsert