SMB file sharing not working with big sur
I have a new mac-mini M1 running big sur , had it 3 weeks, I have my old iMac running high sierra in the same room , I cannot access files/folders on the mini from the imac, spent hours and hours on this. I have folders specified as sharing and permission set to "everyone" , I press command+k on the imac and input the name or the ip address of the mini , the folder list pops up on the iMac but when i try to open one I get the message " you do not have permission ".
Same with any other device I attempt to access the mini from.
For example , I use SMB in kodi on an Nvidia shield and access my own videos stored on an external HDD on the iMac been doing this for years . Have now switched the HDD to the mini and Kodi cant access it anymore.
I can access/mount the folders on my iMac from the mini but not the other way around.
Mac mini, macOS 11.0