fix: catch potential errors enqueuing gov/slashing signals

Author: alexghr

yarn-project/sequencer-client/src/sequencer/sequencer.ts

@@ -412,18 +412,19 @@ export class Sequencer extends (EventEmitter as new () => TypedEventEmitter<Sequ
 
     const enqueueGovernanceSignalPromise =
       this.governanceProposerPayload && !this.governanceProposerPayload.isZero()
-        ? publisher.enqueueGovernanceCastSignal(
-            this.governanceProposerPayload,
-            slot,
-            timestamp,
-            attestorAddress,
-            signerFn,
-          )
+        ? publisher
+            .enqueueGovernanceCastSignal(this.governanceProposerPayload, slot, timestamp, attestorAddress, signerFn)
+            .catch(err => {
+              this.log.error(`Error enqueuing governance vote`, err, { blockNumber: newBlockNumber, slot });
+            })
         : Promise.resolve();
 
     const enqueueSlashingActionsPromise = this.slasherClient
       ?.getProposerActions(slot)
-      ?.then(actions => publisher.enqueueSlashingActions(actions, slot, timestamp, attestorAddress, signerFn));
+      .then(actions => publisher.enqueueSlashingActions(actions, slot, timestamp, attestorAddress, signerFn))
+      .catch(err => {
+        this.log.error(`Error enqueuing slashing actions`, err, { blockNumber: newBlockNumber, slot });
+      });
 
     if (invalidateBlock && !this.config.skipInvalidateBlockAsProposer) {
       publisher.enqueueInvalidateBlock(invalidateBlock);
@@ -482,12 +483,8 @@ export class Sequencer extends (EventEmitter as new () => TypedEventEmitter<Sequ
       this.emit('tx-count-check-failed', { minTxs: this.minTxsPerBlock, availableTxs: pendingTxCount });
     }
 
-    await enqueueGovernanceSignalPromise?.catch(err => {
-      this.log.error(`Error enqueuing governance vote`, err, { blockNumber: newBlockNumber, slot });
-    });
-    await enqueueSlashingActionsPromise?.catch(err => {
-      this.log.error(`Error enqueuing slashing actions`, err, { blockNumber: newBlockNumber, slot });
-    });
+    await enqueueGovernanceSignalPromise;
+    await enqueueSlashingActionsPromise;
 
     const l1Response = await publisher.sendRequests();
     const proposedBlock = l1Response?.successfulActions.find(a => a === 'propose');