[Q]call of overloaded 'getParam(int)' is ambiguous

[maxelle]

I receive this error compiling

C:\Arduino2\test\test.ino:647:47: error: call of overloaded 'getParam(int)' is ambiguous
647 | AsyncWebParameter* p = request->getParam(0);

Please help
Thanks Max

[Pablo2048]

See https://github.com/mathieucarbou/ESPAsyncWebServer/releases/tag/v3.0.1 - you have to add const keyword.

const AsyncWebParameter *p = request->getParam(0);

[maxelle]

Thanks for answer,
I tryed bt same error...

[mathieucarbou]

@maxelle : your parameter type is wrong. Please look at the header file. This is the doc.

[maxelle]

so i have to cast like...
const AsyncWebParameter* p = request->getParam((size_t)0);

[mathieucarbou]

so i have to cast like... const AsyncWebParameter* p = request->getParam((size_t)0);

This is one way to do it, yes. There are other ways also.
0 as written here is an int. There is no getParam() accepting int. And the compiler cannot know which one to pick.