Why is my string being split into individual characters?

[1Blademaster]

So I have this regex expression STRING = r'[^\[\][^\n"]+' to get capture text to save into a variable, but I also have another part of my program which uses literals of ( and ) to do math, such as 5 add ( 5 minus 2 ) = 8. However my issue is that when I run my test and I actually type in the same thing into the interpreter, it causes an error and I'm not sure why? It should show that instead of ( 5 add 5 ) is a STRING, it will be made up of a ( NUMBER ADD NUMBER ), but individual tokens.

WARNING: 5 reduce/reduce conflicts
Token(type='DQUOTE', value='"', lineno=2, index=5)
Token(type='STRING', value='hello', lineno=2, index=6)
Token(type='DQUOTE', value='"', lineno=2, index=11)
Token(type='STRING', value='( 5 add 5 )', lineno=3, index=17)
engpy > (5 add 5)
sly: Syntax error at line 1, token=STRING
engpy > ( 5 add 5 )
sly: Syntax error at line 1, token=STRING

test = '''
    "hello"
    ( 5 add 5 )'''

for t in lexer.tokenize(test):
    print(t)