Trouble installing macOS High Sierra

Hi -

I'm trying to upgrade my laptop to High Sierra (10.13.4). I have a mid-2014 MacBook Pro running Yosemite (10.10.3), and as far as I can tell, it meets the requirements for High Sierra. I downloaded High Sierra from the Mac App Store, but when I attempt to install, I get an error message: "Installation of macOS could not continue. Installation requires downloading important content. That content couldn't be downloaded at this time. Try again later." My internet connection is working fine, I tried restarting, and I tried deleting and redownloading the High Sierra installation package from the App Store, but to no avail.

Also, not sure if this helps, but I checked the installer logs to see if there was any more information. Here's what came up:

...local osinstallersetupplaind[5486]: isConvertableToAPFS: was called on a APFS disk.

...local osinstallersetupplaind[5486]: Target is not convertible to APFS: This volume is not formatted as Mac OS Extended (Journaled).

...local osinstallersetupplaind[5486]: OSISPredicateUpdateInstallerProduct: Couldn't find com.apple.plist.InstallInfo in package references: (

"{\n Identifier = \"com.apple.pkg.InstallESDDmg\";\n Size = 4719681371;\n URL = \"http://swcdn.apple.com/content/downloads/10/62/091-76233/v27a64q1zvxd2lbw4gbej9c 2s5gxk6zb1l/InstallESDDmg.pkg\";\n Version = \"10.13.4.0.0.1522206870\";\n}",

"{\n Identifier = \"com.apple.mpkg.OSInstall\";\n Size = 674140;\n URL = \"http://swcdn.apple.com/content/downloads/10/62/091-76233/v27a64q1zvxd2lbw4gbej9c 2s5gxk6zb1l/OSInstall.mpkg\";\n Version = \"10.13.4.0.0.1522206870\";\n}"

)

...local osinstallersetupplaind[5486]: Predicate update product fetch failed with error: Error Domain=com.apple.OSInstallerSetup.error Code=305 "Installation of macOS could not continue." UserInfo=0x7f8a75593700 {NSLocalizedDescription=Installation of macOS could not continue., NSLocalizedRecoverySuggestion=Installation requires downloading important content. That content can't be downloaded at this time. Try again later.}

Specs:

MacBook Pro (Retina, 13-inch, Mid 2014)

Processor: 2.6 GHz Intel Core i5

Memory: 8 GB 16000 MHz DDR3

Storage capacity: 250 GB

Any help would be greatly appreciated!