Lot of logs entries : 'OnNext called while another OnNext call was in progress on the same Observer.'

[vimarx]

I'm currently working on a project that heavily utilizes logging, and I've noticed numerous log entries stating: 'OnNext called while another OnNext call was in progress on the same Observer.'
Is there an issue with this?
Can they be deleted?
Thanks

[apobekiaris]

'OnNext called while another OnNext call was in progress on the same Observer.'

sounds wrong for sure, do u have a sample