Move base64 conversions off of the main thread

js/modules/data.js

@@ -166,7 +166,7 @@ ipcRenderer.on(
     const job = _getJob(jobId);
     if (!job) {
       throw new Error(
-        `Received job reply to job ${jobId}, but did not have it in our registry!`
+        `Received SQL channel reply to job ${jobId}, but did not have it in our registry!`
       );
     }
 
@@ -174,7 +174,9 @@ ipcRenderer.on(
 
     if (errorForDisplay) {
       return reject(
-        new Error(`Error calling channel ${fnName}: ${errorForDisplay}`)
+        new Error(
+          `Error received from SQL channel job ${jobId} (${fnName}): ${errorForDisplay}`
+        )
       );
     }
 
@@ -196,7 +198,8 @@ function makeChannel(fnName) {
       });
 
       setTimeout(
-        () => reject(new Error(`Request to ${fnName} timed out`)),
+        () =>
+          reject(new Error(`SQL channel job ${jobId} (${fnName}) timed out`)),
         DATABASE_UPDATE_TIMEOUT
       );
     });