Lexical error at line 0, column 0

In the grammar below, I am trying configure any line that starts with ' as a single line comment and anything betweeen /' Multiline Comment '/. The single line comment works ok. But for some reason as soon as I press / or ' or ';' or < or '>' I get the error below. I don't have above characters configured. Shouldn't they be considered default and skip parsing ?

Error

Lexical error at line 0, column 0.  Encountered: "\"" (34), after : ""
Lexical error at line 0, column 0.  Encountered: ">" (62), after : ""
Lexical error at line 0, column 0.  Encountered: "\n" (10), after : "-"

I have only included part of the code below for conciseness. For full Lexer definition please visit the link

TOKEN :
{
  < WHITESPACE:
  " "
| "\t"
| "\n"
| "\r"
| "\f">
}

/* COMMENTS */

MORE :
{
  <"/'"> { input_stream.backup(1); } : IN_MULTI_LINE_COMMENT
}

<IN_MULTI_LINE_COMMENT>
TOKEN :
{
  <MULTI_LINE_COMMENT: "'/" > : DEFAULT
}

<IN_MULTI_LINE_COMMENT>
MORE :
{
  < ~[] >
}

TOKEN :
{
  <SINGLE_LINE_COMMENT: "'" (~["\n", "\r"])* ("\n" | "\r" | "\r\n")?>
}

Copyright Notice：Content Author:「ShaggyInjun」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/16755230/lexical-error-at-line-0-column-0