> For the complete documentation index, see [llms.txt](https://upfinity.gitbook.io/upfinity/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://upfinity.gitbook.io/upfinity/get-started/do-you-need-help/troubleshooting-errors.md).

# Troubleshooting Errors

Use the sidebar ➡️ to jump to the info

Remember, if there is someone who did the buy/sell in chart,

<mark style="color:green;">it means trade is possible.</mark>

Some mistakes or faults are done in your side.

If still having trouble even if you followed all of this,

then contact [@ALLCOINLAB](https://t.me/ALLCOINLAB)

<br>

## INSUFFICIENT\_OUTPUT\_AMOUNT

It is [slippage](https://upfinity.gitbook.io/upfinity/trade-guides/slippage) issue.

## TRANSFER\_FAILED

It is NOT slippage issue.

You are trying to buy more than the limit (10% of price impact)

check [website](https://www.theupfinity.com/dashboard.html#Status) for the buy limit

## TRANSFER\_FROM\_FAILED

&#x20;It is NOT slippage issue.

check[ sell checklists](https://upfinity.gitbook.io/upfinity/trade-guides/sell-checklists)

## cannot estimate gas; transaction may fail or may require manual gas limit

This happens because pancakeswap and poocoin use bad algorithm.

Using desktop chrome + metamask extension is recommended.

{% tabs %}
{% tab title="Buy" %}
Don't set exact number for the UPF part.

Set exact number in the BNB part (or other tokens to buy UPF)&#x20;

Recommend using trade in our [website](https://www.theupfinity.com)
{% endtab %}

{% tab title="Sell" %}
Don't set exact number for the BNB part.

Set exact number in the UPF part when you sell

If using poocoin, don't use auto slippage. Use manual with higher slippage.

If still wrong, Refresh and try again.
{% endtab %}
{% endtabs %}