# Troubleshooting

### The message port closed before a response was received.

* ***Solution*** - open extension in a new tab OR in side panel.

{% hint style="info" %}
You need to open ONLY ONE window. Opening multiple extension tabs will ruin positions list and you won't be able to sell position on the page.
{% endhint %}

### Swap failed: Failed to fetch

* ***Solution*** - recheck your connection link as extension can't connect to bot.

### Swap failed: \[2] no swap subscribers available

* ***Solution*** - start task with watch mode on your instance with bot.