chore: fix system table ctx warning and log more warnings to log

[BohuTANG]

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Summary

Fix:

 error: None, warnings: ["get database failed: default"] }, rows=0, next_page=None, sql='show tables'

Fixes #[Link the issue here]

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - No need test.

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is