Uncaught Error: class 'Search' not found

[jplflyer]

[Enter steps to reproduce:]

Just do a / to start a search.

Atom: 1.51.0 x64
Electron: 5.0.13
OS: Ubuntu 18.04.5
Thrown From: vim-mode-plus package 1.36.4

Stack Trace

Uncaught Error: class 'Search' not found

At /home/jpl/.atom/packages/vim-mode-plus/lib/operation-stack.js:164

Error: class 'Search' not found
    at Function.getClass (/packages/vim-mode-plus/lib/base.js:218:13)
    at OperationStack.run (/packages/vim-mode-plus/lib/operation-stack.js:87:24)
    at /packages/vim-mode-plus/lib/vim-state.js:70:33)
    at CommandRegistry.handleCommandEvent (/usr/share/atom/resources/app/static/<embedded>:11:349780)
    at KeymapManager.dispatchCommandEvent (/usr/share/atom/resources/app/static/<embedded>:11:1231083)
    at KeymapManager.handleKeyboardEvent (/usr/share/atom/resources/app/static/<embedded>:11:1227217)
    at WindowEventHandler.handleDocumentKeyEvent (/usr/share/atom/resources/app/static/<embedded>:11:284829)

Commands

     -1:26.8.0 vim-mode-plus:search (input.hidden-input)
     -0:11.3.0 vim-mode-plus:move-to-beginning-of-line (input.hidden-input)
     -0:10.7.0 vim-mode-plus:move-down (input.hidden-input)
     -0:09.7.0 vim-mode-plus:activate-insert-mode (input.hidden-input)
     -0:08.7.0 vim-mode-plus:activate-normal-mode (input.hidden-input)
     -0:08.3.0 vim-mode-plus:search (input.hidden-input)

Non-Core Packages

atom-html-preview 0.2.6 
ex-mode 0.18.0 
language-cpp14 0.6.2 
markdown-preview-enhanced 0.18.8 
vim-mode-plus 1.36.4