Oracle Cursor Loop in anonymous block giving PLS-00103 Error code

Question

This SQL runs fine and it does everything I would like it to, except that I require it to output nothing but the result of the query. So, I have wrapped some code around it with the intent of doing so. See next block...

SELECT 
  'NO_PROBLEM' 
FROM 
  DUAL 
WHERE 
  NOT EXISTS (
    SELECT 
      UPPER(VALUE) 
    FROM 
      V$SYSTEM_PARAMETER 
    WHERE 
      UPPER(NAME)= 'O7_DICTIONARY_ACCESSIBILITY' 
      AND UPPER(VALUE) != 'FALSE'
  ) 
UNION ALL 
SELECT 
  'PROBLEM' 
FROM 
  DUAL 
WHERE 
  EXISTS (
    SELECT 
      UPPER(VALUE) 
    FROM 
      V$SYSTEM_PARAMETER 
    WHERE 
      UPPER(NAME)= 'O7_DICTIONARY_ACCESSIBILITY' 
      AND UPPER(VALUE) != 'FALSE'
  )

This is where I have added some wrapping

        DECLARE
          v_07_check VARCHAR2(10);
          
            CURSOR c_07_check IS

            SELECT 'NO_PROBLEM'
            FROM   dual
            WHERE  NOT EXISTS
                   (
                          SELECT upper(value)
                          FROM   v$system_parameter
                          WHERE  upper(name)='O7_DICTIONARY_ACCESSIBILITY'
                          AND    upper(value) != 'FALSE' )
            
UNION ALL

            SELECT 'PROBLEM'
            FROM   dual
            WHERE  EXISTS
                   (
                          SELECT upper(value)
                          FROM   v$system_parameter
                          WHERE  upper(name)='O7_DICTIONARY_ACCESSIBILITY'
                          AND    upper(value) != 'FALSE' ) 
    BEGIN OPEN c_07_check;
        
        LOOP
          FETCH c_07_check
          INTO  v_07_check;
          
          EXIT
        WHEN c_07_check%NOTFOUND;
          IF v_07_check = 'PROBLEM' THEN
            dbms_output.put_line('PROBLEM') )
        ELSIF v_07_check = 'NO_PROBLEM' THEN
          dbms_output.put_line('NO_PROBLEM')
        END IF;
        END LOOP;
        CLOSE C_07_CHECK;
        END;
        /

The error message outputted from the code is:

PLS-00103: Encountered the symbol "END" when expecting one of the following:

   := . ( % ;
The symbol ";" was substituted for "END" to continue.
ORA-06550: line 50, column 5:
PLS-00103: Encountered the symbol "CLOSE" 
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:

The line it is complaining about is:

CLOSE c_07_check;

I have checked the documentation from oracle and I am not sure what is wrong here. I have tried moving the close statement to different points in the block but it does not resolve the issue. Can anyone make any suggestions as to where this is failing?