Why does the "serena - find_symbol" command always return empty.

[dtcpay-EvanCao]

Task-17[FindSymbolTool] starting ...
INFO 2025-09-06 18:48:56,146 [SerenaAgentExecutor_0] serena.tools.tools_base:_log_tool_application:212 - find_symbol: name_path='KycService', depth=1, relative_path='src/main/java/top/dtc/risk/service/KycService.java', include_body=False, include_kinds=[], exclude_kinds=[], substring_matching=False, max_answer_chars=-1
INFO 2025-09-06 18:48:56,156 [SerenaAgentExecutor_0] serena.tools.tools_base:task:279 - Result: []
INFO 2025-09-06 18:48:56,162 [SerenaAgentExecutor_0] serena.agent:stop:336 - Task-17[FindSymbolTool] completed in 0.016 seconds
INFO 2025-09-06 18:49:06,522 [MainThread] mcp.server.lowlevel.server:_handle_request:625 - Processing request of type CallToolRequest
INFO 2025-09-06 18:49:06,522 [MainThread] serena.agent:issue_task:415 - Scheduling Task-18[GetSymbolsOverviewTool]
INFO 2025-09-06 18:49:06,522 [SerenaAgentExecutor_0] serena.agent:start:329 - Task-18[GetSymbolsOverviewTool] starting ...
INFO 2025-09-06 18:49:06,522 [SerenaAgentExecutor_0] serena.tools.tools_base:_log_tool_application:212 - get_symbols_overview: relative_path='src/main/java/top/dtc/risk/service/KycService.java', max_answer_chars=-1
INFO 2025-09-06 18:49:06,531 [SerenaAgentExecutor_0] serena.tools.tools_base:task:279 - Result: []

This is the log, is it because of my incorrect usage, operating a Java project in Claude code?

[sdhjl2000]

the same issue on java project, get_symbols_overview also get empty

[opcode81]

Is the project correctly configured as one that uses language "java"?

[sdhjl2000]

@opcode81 just add mcp with "claude mcp add serena -- --context ide-assistant --project $(pwd)",how to config ?

[opcode81]

The language is auto-detected, and you will find it at the beginning of the log.
You can configure it by editing your-project/.serena/project.yml.