Revert "fixes"

This reverts commit 174a232421.

Gemfile.lock

@@ -85,7 +85,7 @@ GEM
       mime-types (>= 1.16)
     chartkick (3.4.0)
     chronic (0.10.2)
-    chunky_png (1.4.0)
+    chunky_png (1.3.12)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0)
@@ -182,6 +182,7 @@ GEM
       json (> 1.8.4)
       rails (> 4.2.0)
       sass-rails (~> 5.0)
+    pg (1.2.3)
     prawn (2.3.0)
       pdf-core (~> 0.8.1)
       ttfunk (~> 1.6)
@@ -238,10 +239,10 @@ GEM
       nokogiri
       rubyzip
       spreadsheet (> 0.6.4)
-    rqrcode (2.1.2)
+    rqrcode (1.1.2)
       chunky_png (~> 1.0)
-      rqrcode_core (~> 1.0)
-    rqrcode_core (1.2.0)
+      rqrcode_core (~> 0.1)
+    rqrcode_core (0.1.2)
     rspec-core (3.9.2)
       rspec-support (~> 3.9.3)
     rspec-expectations (3.9.2)
@@ -380,6 +381,7 @@ DEPENDENCIES
   mysql2 (~> 0.5.2)
   nested_form
   pdfjs_viewer-rails
+  pg
   prawn
   prawn-qrcode
   prawn-table
@@ -389,7 +391,6 @@ DEPENDENCIES
   rails (~> 5.1.0)
   redis (~> 3.0)
   roo
-  rqrcode (= 2.1.2)
   rspec-rails (~> 3.5)
   rubyzip (= 1.0.0)
   sass-rails (~> 5.0)