Fatal error with image upload

I try to upload an image (for group cover image): 4050 X 2727 pixels, 967 KB , and receive a fatal error: 

Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 1321326 bytes) in /home/hiranyas/public_html/ram.li/ram/vendor/imagine/imagine/lib/Imagine/Image/Metadata/ExifMetadataReader.phpon line 84

Other images, with much more KB but less pixels are OK

Please guide me how to fix.

Thank you and a happy new year.