analysis and elaboration error

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Dear all,

I am having the following error message every time trying analysis and elaborate my design on Quartus II software.

error (12006): node instance ''\channel_gn_0: inst_channel_gn_0'' instantiates undefined entity '' channel_gn''

error: quartus ii 64-bit analysis & elaboration was unsuccessful. 1 error, 0 warnings

note: channel is the name of the file.

Any help would be very appreciated.

Best regards,

Nadia

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When compiling any project, Quartus wants you to add files to project. Go to project menu=> add file...

also check that the file pointed at by any other module has a valid link.