Stucco Theme Install - Internal Server Error

I've installed a new version of concrete5 v8.3.2 and it appears to be working fine, but every time I try installing the Stucco theme (with sample data) I get an Internal Server Error.

I am selecting the option "Yes. Reset site content with the content found in this package". If I select "No", the install works, but I'd like to get see the sample content to better understand how the elements are set up.

Any ideas what the issue could be? Here is my environment info

# concrete5 Version
Core Version - 8.3.2
Version Installed - 8.3.2
Database Version - 20180122213656

# concrete5 Packages
Stucco (2.1.4)

# concrete5 Overrides

# concrete5 Cache Settings
Block Cache - On
Overrides Cache - On
Full Page Caching - Off
Full Page Cache Lifetime - Every 6 hours (default setting).

# Server Software

# Server API

# PHP Version

# PHP Extensions
bcmath, bz2, calendar, cgi-fcgi, Core, ctype, curl, date, dom, exif, fileinfo, filter, ftp, gd, gettext, hash, iconv, imagick, imap, json, libxml, mbstring, mcrypt, mysqli, mysqlnd, openssl, pcntl, pcre, PDO, pdo_mysql, pdo_sqlite, posix, pspell, Reflection, session, SimpleXML, soap, sockets, SPL, sqlite3, standard, tokenizer, xml, xmlreader, xmlrpc, xmlwriter, xsl, Zend OPcache, zip, zlib

# PHP Settings
max_execution_time - 300
log_errors_max_len - 1024
max_file_uploads - 20
max_input_nesting_level - 64
max_input_time - -1
max_input_vars - 1000
memory_limit - 90M
post_max_size - 65M
sql.safe_mode - Off
upload_max_filesize - 128MB
mysqli.max_links - Unlimited
mysqli.max_persistent - Unlimited
pcre.backtrack_limit - 1000000
pcre.recursion_limit - 100000
session.cache_limiter - <i>no value</i>
session.gc_maxlifetime - 7200
soap.wsdl_cache_limit - 5
opcache.max_accelerated_files - 3907
opcache.max_file_size - 0
opcache.max_wasted_percentage - 5

View Replies:
hutman replied on at Permalink Reply
What does it say if you look in the PHP Error logs on your server?
walkerfx replied on at Permalink Reply
Found this error in the log:
File does not exist: /home/w4724d/, referer:
hutman replied on at Permalink Reply
The error you are looking for should start with PHP Fatal Error, this happened after the one we're looking for.
walkerfx replied on at Permalink Reply
[Thu Feb 01 10:34:03 2018] [error] [client] Premature end of script headers: index.php, referer:

I increased the PHP max_execution_time to 2000 and the install got further. It still caused a 500 Internal Server Error, but the theme is working now. I suspect that the extra install data is taking too long to execute, but enough of it was installed for me to move forward with it.