[BP-585] Export of metadata using the backup tool is broken, import functionality seems to be working

[MithunKinarullathil]

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Issue Description

Export of metadata using the backup tool is broken, import functionality seems to be working

Steps to Reproduce

1. Install movai-flow 1.2.0-1
2. Go to Documents/MovaiFlow/userspace and make a cache/ros/src dir

   cd ~/Documents/MovaiFlow/userspace

3. Clone the sample project
4. Go to spawner container

   docker exec -ti spawner-robot1 bash

   5. import all the metadata

      python3.8 -m tools.backup -a import -r ~/user/cache/ros/src/movai_ce_demos/ -p metadata -m ~/user/cache/ros/src/movai_ce_demos/manifest.txt

5. Confirm no errors
6. export all the metadata

   python3.8 -m tools.backup -a export -r ~/user/cache/ros/src/movai_ce_demos/ -p metadata -m ~/user/cache/ros/src/movai_ce_demos/manifest.txt

7. Confirm the below error

Actual Behaviour

Expected Behaviour

Export of all the items that is mentioned in the manifest file

Screenshots/GIFs

Versions

• movai-flow: 1.2.0-1
• movai-ide: 3.0.0-4

Possible workarounds

• None

Additional Details

• N/A

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