Ramin

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Added smooth ErrorHandler PR #2481

> How can this issue be tested? @aminlatifi can help us.

> where can this issue be tested? This issue is about the whole app. Sometimes vertical scroll bar used to be hidden and user couldn't see the rest of the...

In trace.giveth.io it's ok, but when I use master branch with develop backend, I get same error. It seems it's related to backend. @mohammadranjbarz Can you check it?

@mohammadranjbarz Yes I'm still getting it. My profile token is DAI and convertMultipleRates doesn't give current balance value of Trace in DAI 

> Is there any context on how we can test this issue? You should delegate to a Campaign or Trace from "My delegations" page. Then check whether the amount of...

@MoeNick This Trace just accepts "Ropsten ETH" so changing token is disabled. [https://feathers.develop.giveth.io/traces?slug=test-expences](https://feathers.develop.giveth.io/traces?slug=test-expences)

> is there any information here for testers? You can test it on Incognito/Private window in browser to see if tx limit banner is working properly. 

> We may re-define Oh-no error message, to discover it, I need to know when they happen. > @RamRamez can you help me on this? This is shown when tnx...