fix: check for username before allowing password change (#2239)

lnbits/static/js/account.js

@@ -54,6 +54,13 @@ new Vue({
       }
     },
     updatePassword: async function () {
+      if (!this.user.username) {
+        this.$q.notify({
+          type: 'warning',
+          message: 'Please set a username first.'
+        })
+        return
+      }
       try {
         const {data} = await LNbits.api.request(
           'PUT',
@@ -61,6 +68,7 @@ new Vue({
           null,
           {
             user_id: this.user.id,
+            username: this.user.username,
             password_old: this.passwordData.oldPassword,
             password: this.passwordData.newPassword,
             password_repeat: this.passwordData.newPasswordRepeat
@@ -77,6 +85,13 @@ new Vue({
       }
     },
     showChangePassword: function () {
+      if (!this.user.username) {
+        this.$q.notify({
+          type: 'warning',
+          message: 'Please set a username first.'
+        })
+        return
+      }
       this.passwordData = {
         show: true,
         oldPassword: null,