fix(core): loading of deleted bots warn

src/bp/core/botpress.ts

@@ -184,16 +184,24 @@ export class Botpress {
     const botsRef = await this.workspaceService.getBotRefs()
     const botsIds = await this.botService.getBotsIds()
     const unlinked = _.difference(botsIds, botsRef)
+    const deleted = _.difference(botsRef, botsIds)
 
     if (unlinked.length) {
       this.logger.warn(
         `Some unlinked bots exist on your server, to enable them add them to workspaces.json [${unlinked.join(', ')}]`
       )
     }
 
+    if (deleted.length) {
+      this.logger.warn(
+        `Some bots have been deleted from the disk but are still referenced in your workspaces.json file.
+ Please delete them from workspaces.json to get rid of this warning. [${deleted.join(', ')}]`
+      )
+    }
+
     const bots = await this.botService.getBots()
     const disabledBots = [...bots.values()].filter(b => b.disabled).map(b => b.id)
-    const botsToMount = _.without(botsRef, ...disabledBots)
+    const botsToMount = _.without(botsRef, ...disabledBots, ...deleted)
 
     await Promise.map(botsToMount, botId => this.botService.mountBot(botId))
   }