Transfer photos from one mac to another
I am trying to transfer photos from an old mac (2011) to a new mac (2019). The old mac photo library was problematic, so I started afresh on the new mac and have transferred some photos already by exporting from the old library to an external hard drive and then importing them on the new computer. While it has largely been working fine, some photos are not exporting successfully and some are exporting with the wrong date. I bought a thunderbolt cable to connect them, but that doesn't fit the 2011 computer. Does anyone have another suggestion for transfer that won't have the errors? Thanks
iMac 27″, macOS 10.14