I’m attempting to update an EE site from 2.5.5 to 2.7.3, the installer process runs smoothly, but then I get the following error on the front end & when accessing control panel:
Call to undefined function reduce_double_slashes() in admin/expressionengine/libraries/Extensions.php on line 194
I have rolled my local repo back to 2.5.5, restored my old db, and applied the update again with the same results.
I’d appreciate any help in getting this upgrade sorted out & working properly.