More defensive coding for static_dir
More defensive coding for static_dir

stopsatgreen/botkit-messenger,acrollet/botkit,gabrielfirmacion/frontdoor-demo,EliKrumholz/botkit,howdyai/botkit,adam-nnl/omgwtfbbq-bot,ouadie-lahdioui/botkit,DJ1K1/botkit,howdyai/botkit,howdyai/botkit,grindcore819/slackathonMTL,myochum/Triviabot,samuelsan/YelpBot,tmtkg/botkit,dcortes22/picnic,twhit027/lewd-bot,healthchatnow/hcn,stopsatgreen/botkit-slack,DJ1K1/botkit,dhulser/slack-reporting-bot,howdyai/botkit,cbuehnerkemper/botkit-copy