BUG #16313: [2528] ERROR: column pd.adsrc does not exist at character 89

The following bug has been logged on the website:

Bug reference:      16313
Logged by:          jaheer shaik
Email address:      jaheershaik1234@gmail.com
PostgreSQL version: 12.2
Operating system:   window 10
Description:

2020-03-24 11:23:30.965 +08 [2528] LOG:  connection received:
host=xxx.xx.xx.xx port=50063
2020-03-24 11:23:30.970 +08 [2528] LOG:  connection authorized: user=xxxxx
database=xxxx
2020-03-24 11:23:30.974 +08 [2528] LOG:  statement: SELECT VERSION()
2020-03-24 11:23:30.978 +08 [2528] LOG:  statement: SET
client_encoding='WIN1252'
2020-03-24 11:23:30.982 +08 [2528] LOG:  statement: show integer_datetimes
2020-03-24 11:23:30.986 +08 [2528] LOG:  statement: show bytea_output
2020-03-24 11:23:30.998 +08 [2528] LOG:  execute
PRSTMTST433301360/PORTALST433301360: SELECT * FROM appregistry WHERE
upper(reg_section)=$1 AND upper(reg_name)=$2 AND deleted='0'
2020-03-24 11:23:30.998 +08 [2528] DETAIL:  parameters: $1 = 'BOOKINGS', $2
= 'SENDMAILS'
2020-03-24 11:23:31.005 +08 [2528] ERROR:  column pd.adsrc does not exist at
character 89
2020-03-24 11:23:31.005 +08 [2528] STATEMENT:  SELECT pa.attname, CASE  WHEN
relname = 'appregistry' THEN 0 END AS idx, pa.attnotnull, pd.adsrc,
pi.indisprimary, pc.oid, pa.attnum FROM pg_attribute pa JOIN
pg_catalog.pg_class pc ON (pa.attrelid = pc.oid) LEFT JOIN
pg_catalog.pg_attrdef pd ON (pd.adnum = pa.attnum) AND (pd.adrelid = pc.oid)
LEFT JOIN pg_catalog.pg_index pi ON (pi.indrelid = pc.oid) AND (pa.attnum =
any(pi.indkey)) WHERE (pa.attnum > 0) AND ((pc.relname = 'appregistry'))
ORDER BY idx, pa.attnum
2
i am getting ERROR:  column pd.adsrc does not exist at character 89 when
ever i am trying to execute the query from my application with posgreSQL12.2
version.it works fine with 11.