this installs fine with no errors, only download time is longer than ideal but it's the same on browser so out of our control.

2023-01-20 13:57:05 : REQ : pgadmin4 : ################## Start Installomator v. 10.3beta, date 2023-01-20
2023-01-20 13:57:05 : INFO : pgadmin4 : ################## Version: 10.3beta
2023-01-20 13:57:05 : INFO : pgadmin4 : ################## Date: 2023-01-20
2023-01-20 13:57:05 : INFO : pgadmin4 : ################## pgadmin4
2023-01-20 13:57:05 : DEBUG : pgadmin4 : DEBUG mode 1 enabled.
2023-01-20 13:57:06 : DEBUG : pgadmin4 : name=pgAdmin 4
2023-01-20 13:57:06 : DEBUG : pgadmin4 : appName=
2023-01-20 13:57:06 : DEBUG : pgadmin4 : type=dmg
2023-01-20 13:57:06 : DEBUG : pgadmin4 : archiveName=
2023-01-20 13:57:06 : DEBUG : pgadmin4 : downloadURL=https://ftp.postgresql.org/pub/pgadmin/pgadmin4/v6.19/macos/pgadmin4-6.19.dmg
2023-01-20 13:57:06 : DEBUG : pgadmin4 : curlOptions=
2023-01-20 13:57:06 : DEBUG : pgadmin4 : appNewVersion=6.19
2023-01-20 13:57:06 : DEBUG : pgadmin4 : appCustomVersion function: Not defined
2023-01-20 13:57:06 : DEBUG : pgadmin4 : versionKey=CFBundleShortVersionString
2023-01-20 13:57:06 : DEBUG : pgadmin4 : packageID=
2023-01-20 13:57:06 : DEBUG : pgadmin4 : pkgName=
2023-01-20 13:57:06 : DEBUG : pgadmin4 : choiceChangesXML=
2023-01-20 13:57:07 : DEBUG : pgadmin4 : expectedTeamID=26QKX55P9K
2023-01-20 13:57:07 : DEBUG : pgadmin4 : blockingProcesses=
2023-01-20 13:57:07 : DEBUG : pgadmin4 : installerTool=
2023-01-20 13:57:07 : DEBUG : pgadmin4 : CLIInstaller=
2023-01-20 13:57:07 : DEBUG : pgadmin4 : CLIArguments=
2023-01-20 13:57:07 : DEBUG : pgadmin4 : updateTool=
2023-01-20 13:57:07 : DEBUG : pgadmin4 : updateToolArguments=
2023-01-20 13:57:07 : DEBUG : pgadmin4 : updateToolRunAsCurrentUser=
2023-01-20 13:57:07 : INFO : pgadmin4 : BLOCKING_PROCESS_ACTION=tell_user
2023-01-20 13:57:07 : INFO : pgadmin4 : NOTIFY=success
2023-01-20 13:57:07 : INFO : pgadmin4 : LOGGING=DEBUG
2023-01-20 13:57:07 : INFO : pgadmin4 : LOGO=/System/Applications/App Store.app/Contents/Resources/AppIcon.icns
2023-01-20 13:57:07 : INFO : pgadmin4 : Label type: dmg
2023-01-20 13:57:07 : INFO : pgadmin4 : archiveName: pgAdmin 4.dmg
2023-01-20 13:57:07 : INFO : pgadmin4 : no blocking processes defined, using pgAdmin 4 as default
2023-01-20 13:57:07 : DEBUG : pgadmin4 : Changing directory to /Users/asri/Documents/dev/Installomator/build
2023-01-20 13:57:07 : INFO : pgadmin4 : name: pgAdmin 4, appName: pgAdmin 4.app
2023-01-20 13:57:07 : WARN : pgadmin4 : No previous app found
2023-01-20 13:57:07 : WARN : pgadmin4 : could not find pgAdmin 4.app
2023-01-20 13:57:07 : INFO : pgadmin4 : appversion:
2023-01-20 13:57:07 : INFO : pgadmin4 : Latest version of pgAdmin 4 is 6.19
2023-01-20 13:57:07 : REQ : pgadmin4 : Downloading https://ftp.postgresql.org/pub/pgadmin/pgadmin4/v6.19/macos/pgadmin4-6.19.dmg to pgAdmin 4.dmg
2023-01-20 13:57:07 : DEBUG : pgadmin4 : No Dialog connection, just download
2023-01-20 13:57:24 : DEBUG : pgadmin4 : File list: -rw-r--r-- 1 asri staff 183M 20 Jan 13:57 pgAdmin 4.dmg
2023-01-20 13:57:24 : DEBUG : pgadmin4 : File type: pgAdmin 4.dmg: bzip2 compressed data, block size = 900k
2023-01-20 13:57:24 : DEBUG : pgadmin4 : curl output was:

• Trying 72.32.157.246:443...
• Connected to ftp.postgresql.org (72.32.157.246) port 443 (#0)
• ALPN, offering h2
• ALPN, offering http/1.1
• successfully set certificate verify locations:
• CAfile: /etc/ssl/cert.pem
• CApath: none
• (304) (OUT), TLS handshake, Client hello (1):
  } [323 bytes data]
• (304) (IN), TLS handshake, Server hello (2):
  { [88 bytes data]
• (304) (OUT), TLS handshake, Client hello (1):
  } [388 bytes data]
• (304) (IN), TLS handshake, Server hello (2):
  { [187 bytes data]
• (304) (IN), TLS handshake, Unknown (8):
  { [19 bytes data]
• (304) (IN), TLS handshake, Certificate (11):
  { [4359 bytes data]
• (304) (IN), TLS handshake, CERT verify (15):
  { [520 bytes data]
• (304) (IN), TLS handshake, Finished (20):
  { [52 bytes data]
• (304) (OUT), TLS handshake, Finished (20):
  } [52 bytes data]
• SSL connection using TLSv1.3 / AEAD-AES256-GCM-SHA384
• ALPN, server accepted to use h2
• Server certificate:
• subject: CN=ftp.postgresql.org
• start date: Dec 2 02:08:21 2022 GMT
• expire date: Mar 2 02:08:20 2023 GMT
• subjectAltName: host "ftp.postgresql.org" matched cert's "ftp.postgresql.org"
• issuer: C=US; O=Let's Encrypt; CN=R3
• SSL certificate verify ok.
• Using HTTP2, server supports multiplexing
• Connection state changed (HTTP/2 confirmed)
• Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
• Using Stream ID: 1 (easy handle 0x7f8de700b600)

GET /pub/pgadmin/pgadmin4/v6.19/macos/pgadmin4-6.19.dmg HTTP/2
Host: ftp.postgresql.org
user-agent: curl/7.79.1
accept: /

• Connection state changed (MAX_CONCURRENT_STREAMS == 128)!
  < HTTP/2 200
  < server: nginx
  < date: Fri, 20 Jan 2023 05:57:08 GMT
  < content-type: application/octet-stream
  < content-length: 191725483
  < last-modified: Tue, 17 Jan 2023 10:50:26 GMT
  < etag: "63c67d72-b6d7fab"
  < strict-transport-security: max-age=31536000
  < accept-ranges: bytes
  <
  { [16366 bytes data]
• Connection #0 to host ftp.postgresql.org left intact

2023-01-20 13:57:24 : DEBUG : pgadmin4 : DEBUG mode 1, not checking for blocking processes
2023-01-20 13:57:24 : REQ : pgadmin4 : Installing pgAdmin 4
2023-01-20 13:57:24 : INFO : pgadmin4 : Mounting /Users/asri/Documents/dev/Installomator/build/pgAdmin 4.dmg
2023-01-20 13:57:48 : DEBUG : pgadmin4 : Debugging enabled, dmgmount output was:
Checksumming Protective Master Boot Record (MBR : 0)…
Protective Master Boot Record (MBR :: verified CRC32 $26950D29
Checksumming GPT Header (Primary GPT Header : 1)…
GPT Header (Primary GPT Header : 1): verified CRC32 $4FF34EC0
Checksumming GPT Partition Data (Primary GPT Table : 2)…
GPT Partition Data (Primary GPT Tabl: verified CRC32 $45C21899
Checksumming (Apple_Free : 3)…
(Apple_Free : 3): verified CRC32 $00000000
Checksumming disk image (Apple_HFS : 4)…
disk image (Apple_HFS : 4): verified CRC32 $11368A88
Checksumming (Apple_Free : 5)…
(Apple_Free : 5): verified CRC32 $00000000
Checksumming GPT Partition Data (Backup GPT Table : 6)…
GPT Partition Data (Backup GPT Table: verified CRC32 $45C21899
Checksumming GPT Header (Backup GPT Header : 7)…
GPT Header (Backup GPT Header : 7): verified CRC32 $34A03204
verified CRC32 $4683BF87
/dev/disk4 GUID_partition_scheme
/dev/disk4s1 Apple_HFS /Volumes/pgAdmin 4 2

2023-01-20 13:57:48 : INFO : pgadmin4 : Mounted: /Volumes/pgAdmin 4 2
2023-01-20 13:57:48 : INFO : pgadmin4 : Verifying: /Volumes/pgAdmin 4 2/pgAdmin 4.app
2023-01-20 13:57:48 : DEBUG : pgadmin4 : App size: 607M /Volumes/pgAdmin 4 2/pgAdmin 4.app
2023-01-20 13:59:37 : DEBUG : pgadmin4 : Debugging enabled, App Verification output was:
/Volumes/pgAdmin 4 2/pgAdmin 4.app: accepted
source=Notarized Developer ID
origin=Developer ID Application: EnterpriseDB Corporation (26QKX55P9K)

2023-01-20 13:59:37 : INFO : pgadmin4 : Team ID matching: 26QKX55P9K (expected: 26QKX55P9K )
2023-01-20 13:59:37 : INFO : pgadmin4 : Installing pgAdmin 4 version 6.19 on versionKey CFBundleShortVersionString.
2023-01-20 13:59:37 : INFO : pgadmin4 : App has LSMinimumSystemVersion: 10.10.0
2023-01-20 13:59:37 : DEBUG : pgadmin4 : DEBUG mode 1 enabled, skipping remove, copy and chown steps
2023-01-20 13:59:37 : INFO : pgadmin4 : Finishing...
2023-01-20 13:59:40 : INFO : pgadmin4 : name: pgAdmin 4, appName: pgAdmin 4.app
2023-01-20 13:59:40 : WARN : pgadmin4 : No previous app found
2023-01-20 13:59:40 : WARN : pgadmin4 : could not find pgAdmin 4.app
2023-01-20 13:59:40 : REQ : pgadmin4 : Installed pgAdmin 4
2023-01-20 13:59:40 : INFO : pgadmin4 : notifying
2023-01-20 13:59:40 : DEBUG : pgadmin4 : Unmounting /Volumes/pgAdmin 4 2
2023-01-20 13:59:41 : DEBUG : pgadmin4 : Debugging enabled, Unmounting output was:
"disk4" ejected.
2023-01-20 13:59:41 : DEBUG : pgadmin4 : DEBUG mode 1, not reopening anything
2023-01-20 13:59:41 : REQ : pgadmin4 : All done!
2023-01-20 13:59:41 : REQ : pgadmin4 : ################## End Installomator, exit code 0