[MM-14727] Added error handling for when fetching a bot owner's user …

…fails

app/bot.go

@@ -6,6 +6,7 @@ package app
 import (
 	"github.com/mattermost/mattermost-server/mlog"
 	"github.com/mattermost/mattermost-server/model"
+	"github.com/mattermost/mattermost-server/store"
 	"github.com/mattermost/mattermost-server/utils"
 )
 
@@ -24,8 +25,11 @@ func (a *App) CreateBot(bot *model.Bot) (*model.Bot, *model.AppError) {
 	}
 
 	// Get the owner of the bot, if one exists. If not, don't send a message
-	ownerUser, _ := a.Srv.Store.User().Get(bot.OwnerId)
-	if ownerUser != nil {
+	ownerUser, err := a.Srv.Store.User().Get(bot.OwnerId)
+	if err != nil && err.Id != store.MISSING_ACCOUNT_ERROR {
+		mlog.Error(err.Error())
+		return nil, err
+	} else if ownerUser != nil {
 		// Send a message to the bot's creator to inform them that the bot needs to be added
 		// to a team and channel after it's created
 		channel, err := a.GetOrCreateDirectChannel(result.Data.(*model.Bot).UserId, bot.OwnerId)