correctly respond when user is banned or otherwise not available on api

.github/workflows/ci.yml

@@ -41,8 +41,4 @@ jobs:
 
     - name: Set outputs
       id: vars
-      run: echo "::set-output name=sha_short::$(echo ${{ github.sha }} | cut -c1-4)"
-
-    - name: announce update
-      run: |
-        echo -en "PASS ${{ secrets.TMI_TOKEN }}\r\nNICK gempbot\r\nPRIVMSG #pajlada :nymnREACT $(echo '${{ github.event.head_commit.message }}' | tr '\n' ' ' | cut -c -200) github.com/gempir/justlog/commit/${{ steps.vars.outputs.sha_short }} | justlog update\r\n" | openssl s_client -connect irc.chat.twitch.tv:6697
+      run: echo "::set-output name=sha_short::$(echo ${{ github.sha }} | cut -c1-4)"

api/server.go

@@ -171,6 +171,11 @@ func (s *Server) fillUserids(w http.ResponseWriter, r *http.Request) (url.Values
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return nil, err
 		}
+		if len(users) == 0 {
+			err := fmt.Errorf("could not find users")
+			http.Error(w, err.Error(), http.StatusUnprocessableEntity)
+			return nil, err
+		}
 
 		query.Set("userid", users[username].ID)
 	}
@@ -183,6 +188,11 @@ func (s *Server) fillUserids(w http.ResponseWriter, r *http.Request) (url.Values
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return nil, err
 		}
+		if len(users) == 0 {
+			err := fmt.Errorf("could not find users")
+			http.Error(w, err.Error(), http.StatusUnprocessableEntity)
+			return nil, err
+		}
 
 		query.Set("channelid", users[channelName].ID)
 	}