Peggy is throwing error when I tried to compile grammar for Java

[yashwanthm3012]

So I am trying to add a new code practice for Java and I have written a grammar for Java but when i tried to compile the code using

./compile.ts

it is throwing error

peg$SyntaxError: Expected ":class", ":if", or whitespace but "m" found.
at new peg$SyntaxError (file:///home/yash/keybr.com/packages/keybr-code/lib/parser.js:13:20)
at peg$buildStructuredError (file:///home/yash/keybr.com/packages/keybr-code/lib/parser.js:436:12)
at peg$parse (/home/yash/keybr.com/packages/keybr-code/lib/parser.peggy:83:2)
at parse (/home/yash/keybr.com/packages/keybr-code/lib/parse.ts:11:5)
at (/home/yash/keybr.com/packages/keybr-code/lib/compile.ts:17:21)
at ModuleJob.run (node:internal/modules/esm/module_job:274:25)
at async onImport.tracePromise.proto (node:internal/modules/esm/loader:644:26)
at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:116:5) {
expected: [
{ type: 'other', description: 'whitespace' },
{ type: 'literal', text: ':if', ignoreCase: false },
{ type: 'other', description: 'whitespace' },
{ type: 'literal', text: ':class', ignoreCase: false }
],
found: 'm',
location: {
source: '/home/yash/keybr.com/packages/keybr-code/lib/syntax/lang_java.g',
start: { offset: 22, line: 1, column: 23 },
end: { offset: 23, line: 1, column: 24 }
}
}

Node.js v22.15.0

The error is in line 1 and column 23 below is that line

class_declaration -> {modifier} _ :keyword class _ identifier [:keyword extends _ type] [:keyword implements _ type_list] _ class_body;

please explain what changes to make