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Posted to notifications@apisix.apache.org by GitBox <gi...@apache.org> on 2021/04/27 08:06:59 UTC

[GitHub] [apisix] Firstsawyou commented on issue #4138: request help: bad argument #2 to 'warn' (expected table to have __tostring metamethod)

Firstsawyou commented on issue #4138:
URL: https://github.com/apache/apisix/issues/4138#issuecomment-827406877


   >  core.log.warn("headers_map: ", headers_map)
   
   Because the headers_map type is a table, not a string. Therefore, it cannot be printed out directly, it needs to be encoded first. You should debug like this:
   
   ```
   core.log.warn("headers_map: ", core.json.encode(headers_map))
   ```


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