not possible to import file for backtest

[Krzysiaczek99]

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Step 2: Describe your environment

• OS : [Windows]
• binary file used for installation

Step 3: Describe the problem:

Describe the bug
After inststalling octobot for Windows and attempt to import local file error is issued

2023-05-05 00:02:48,782 ERROR DataCollectorWebInterfaceModel Error when saving file: [Errno 2] No such file or directory: 'backtesting\data/zzz.data'. File can't be saved.

Expected behavior
Succesfull import

Steps to reproduce:

1. install locally (Windows)
2. try to import in backtest section

3. ---

Observed Results:

error
dat.txt

Relevant code exceptions or logs:

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