fix: at least one charge must be active in order to fetch balance

lnbits/extensions/satspay/models.py

@@ -49,7 +49,6 @@ class Charges(BaseModel):
     def time_elapsed(self):
         return self.time_left < 0
 
-
     @property
     def paid(self):
         if self.balance >= self.amount:

lnbits/extensions/satspay/templates/satspay/index.html

@@ -128,6 +128,7 @@
               <q-td key="timeLeft" :props="props" :class="">
                 <div>{{props.row.timeLeft}}</div>
                 <q-linear-progress
+                  v-if="props.row.timeLeft"
                   :value="props.row.progress"
                   color="secondary"
                 >
@@ -580,16 +581,23 @@
         this.createCharge(wallet, data)
       },
       refreshActiveChargesBalance: async function () {
+        try {
           const activeLinkIds = this.chargeLinks
             .filter(c => !c.paid && !c.time_elapsed && !c.hasStaleBalance)
             .map(c => c.id)
             .join(',')
+          if (activeLinkIds) {
             await LNbits.api.request(
               'GET',
               '/satspay/api/v1/charges/balance/' + activeLinkIds,
               'filla'
             )
+          }
+        } catch (error) {
+          LNbits.utils.notifyApiError(error)
+        } finally {
           await this.getCharges()
+        }
       },
       refreshBalance: async function (charge) {
         try {