Admin account can upload user profile image, but when regular user try to upload image on his profile he gets this error message:

Debug info: ERROR: value too long for type character varying(2)
UPDATE mdl_user SET firstname = $1,lastname = $2,email = $3,maildisplay = $4,city = $5,country = $6,timezone = $7,theme = $8,imagealt = $9,firstnamephonetic = $10,lastnamephonetic = $11,middlename = $12,alternatename = $13,url = $14,icq = $15,skype = $16,aim = $17,yahoo = $18,msn = $19,idnumber = $20,institution = $21,department = $22,phone1 = $23,phone2 = $24,address = $25,timemodified = $26,description = $27,descriptionformat = $28 WHERE id=$29
[array (
'firstname' => XXXXX',
'lastname' => 'XXXXX',
'email' => 'XXXXX',
'maildisplay' => '2',
'city' => 'XXXXX',
'country' =>
array (
0 => 'XXXXX',
),
'timezone' => 'XXXXX',
'theme' => '',
'imagealt' => '',
'firstnamephonetic' => '',
'lastnamephonetic' => '',
'middlename' => '',
'alternatename' => '',
'url' => '',
'icq' => '',
'skype' => '',
'aim' => '',
'yahoo' => '',
'msn' => '',
'idnumber' => '',
'institution' => 'XXXXX',
'department' => '',
'phone1' => '',
'phone2' => '',
'address' => '',
'timemodified' => 1448070462,
'description' => '',
'descriptionformat' => '1',
0 => 110963,
)]
Error code: dmlwriteexception

Stack trace:

line 446 of /lib/dml/moodle_database.php: dml_write_exception thrown
line 244 of /lib/dml/pgsql_native_moodle_database.php: call to moodle_database->query_end()
line 1131 of /lib/dml/pgsql_native_moodle_database.php: call to pgsql_native_moodle_database->query_end()
line 1171 of /lib/dml/pgsql_native_moodle_database.php: call to pgsql_native_moodle_database->update_record_raw()
line 173 of /user/lib.php: call to pgsql_native_moodle_database->update_record()
line 230 of /user/edit.php: call to user_update_user()

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Moodle 2.9.3 (Build: 20151113)
Postgres 9.3.10
PHP 5.5.9.1.4.14
Ubuntu