Errors at the bottom of a file about vim-anyfold HOT 4 CLOSED

$ git config --get remote.origin.url
https://github.com/pseewald/vim-anyfold.git
$ git status
On branch master
Your branch is up-to-date with 'origin/master'.
nothing to commit, working directory clean

filetype plugin indent on
syntax on
let anyfold_activate=1
set foldlevel=0

Error detected while processing function anyfold#init:
line   61:
E216: No such group or event: TextChanged,InsertLeave <buffer> :call s:ReloadFolds()

E684: list index out of range: 1251
E15: Invalid expression: b:anyfold_ind_buffer[v:lnum-1]
Press ENTER or type command to continue
E684: list index out of range: 1252
Press ENTER or type command to continue
E15: Invalid expression: b:anyfold_ind_buffer[v:lnum-1]
Press ENTER or type command to continue
Error detected while processing function GetPythonIndent:
line   30:
E121: Undefined variable: dummy
Press ENTER or type command to continue
Error detected while processing function GetPythonIndent:
line   30:
E15: Invalid expression: line('.') < 1200 ? dummy : synIDattr(synID(line('.'), col('.'), 1), 'name') =~ '\(Comment\|String\)$'
Press ENTER or type command to continue
Error detected while processing function GetPythonIndent:
line   49:
E121: Undefined variable: dummy
Press ENTER or type command to continue
Error detected while processing function GetPythonIndent:
line   49:
E15: Invalid expression: line('.') < 1203 ? dummy : synIDattr(synID(line('.'), col('.'), 1), 'name') =~ '\(Comment\|String\)$'
Press ENTER or type command to continue

E684: list index out of range: 113
E15: Invalid expression: b:anyfold_ind_buffer[v:lnum-1]
Press ENTER or type command to continue