> For the complete documentation index, see [llms.txt](https://mozartfinance.gitbook.io/mozart-finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mozartfinance.gitbook.io/mozart-finance/help/troubleshooting-errors.md).
# Troubleshooting Errors
## **Issues on the Exchange**
### **INSUFFICIENT\_OUTPUT\_AMOUNT**
> The transaction cannot succeed due to error: INSUFFICIENT\_OUTPUT\_AMOUNT. This is probably an issue with one of the tokens you are swapping.
You're trying to swap tokens, but your slippage tolerance is too low or liquidity is too low.
{% tabs %}
{% tab title="Solution" %}
1. Refresh your page and try again later.
2. Try trading a smaller amount at one time.
3. Increase your slippage tolerance:
1. Tap the settings icon on the liquidity page.
2. Increase your slippage tolerance a little and try again.\
 
4. Lastly, try inputting an amount with fewer decimal places.
{% endtab %}
{% tab title="Reason" %}
**This usually happens when trading tokens with low liquidity.**
That means there isn't enough of one of the tokens you're trying to swap in the Liquidity Pool: it's probably a small-cap token that few people are trading.
However, there's also the chance that you're trying to trade a scam token which cannot be sold. In this case, PancakeSwap isn't able to block a token or return funds.
{% endtab %}
{% endtabs %}
### **INSUFFICIENT\_A\_AMOUNT or INSUFFICIENT\_B\_AMOUNT**
> Fail with error 'PancakeRouter: INSUFFICIENT\_A\_AMOUNT'\
> or\
> Fail with error 'PancakeRouter: INSUFFICIENT\_B\_AMOUNT'
You're trying to add/remove liquidity from a liquidity pool (LP), but there isn't enough of one of the two tokens in the pair.
{% tabs %}
{% tab title="Solution" %}
**Refresh your page and try again, or try again later.**
Still doesn't work?
1. Tap the settings icon on the liquidity page.
2. Increase your slippage tolerance a little and try again.
{% endtab %}
{% tab title="Reason" %}
{% endtab %}
{% endtabs %}
### Out of Gas error
> Warning! Error encountered during contract execution \[out of gas]
You have set a low gas limit when trying to make a transaction.
{% tabs %}
{% tab title="Solution" %}
Try manually increasing the **gas limit** (not gas price!) in your wallet before signing the transaction.
A limit of 200000 is usually enough.
The above example is from Metamask; check your wallet's documentation if you aren't sure how to adjust the gas limit.
{% endtab %}
{% endtabs %}
## **Other issues**
### Provider Error: No provider was found
* Clear your cache and cookies
* Disconnect and reconnect your wallet
* Restart your device
### Unsupported Chain ID
Switch your chain to Binance Smart Chain. Check your wallet's documentation for a guide if you need help.
